diff --git a/addons/base_automation/views/base_automation_views.xml b/addons/base_automation/views/base_automation_views.xml
index 319bf9be61a..36441a34010 100644
--- a/addons/base_automation/views/base_automation_views.xml
+++ b/addons/base_automation/views/base_automation_views.xml
@@ -138,6 +138,8 @@
                                                         <field name="value" invisible="1" />
                                                         <field name="selection_value" invisible="1" />
                                                         <field name="value_field_to_show" invisible="1"/>
+                                                        <field name="update_field_type" invisible="1"/>
+                                                        <field name="update_m2m_operation" invisible="1"/>
 
                                                         <!-- Icon section -->
                                                         <i
@@ -158,16 +160,26 @@
                                                         />
                                                         <field name="name" class="text-truncate" />
                                                         <t invisible="state != 'object_write'">
-                                                            <span>to</span>
-                                                            <code invisible="evaluation_type != 'equation'" t-esc="record.value.raw_value"/>
-                                                            <span invisible="evaluation_type == 'equation'" >
-                                                                <field name="selection_value" invisible="value_field_to_show != 'selection_value'" class="d-inline"/>
-                                                                <span invisible="value_field_to_show == 'selection_value'">
-                                                                    <span invisible="value == False or evaluation_type == False">"</span>
-                                                                    <field name="value" class="d-inline"/>
-                                                                    <span invisible="value == False or evaluation_type == False">"</span>
-                                                                </span>
-                                                            </span>
+                                                            <t invisible="not (update_field_type == 'many2many' and update_m2m_operation == 'clear') or evaluation_type != 'value'">
+                                                                <span>by clearing it</span>
+                                                            </t>
+                                                            <t invisible="not (update_field_type == 'many2many' and update_m2m_operation == 'add') or evaluation_type != 'value'">
+                                                                <span>by adding</span><field name="resource_ref"/>
+                                                            </t>
+                                                            <t invisible="not (update_field_type == 'many2many' and update_m2m_operation == 'remove') or evaluation_type != 'value'">
+                                                               <span>by removing</span><field name="resource_ref"/>
+                                                            </t>
+                                                            <t invisible="not (update_field_type == 'many2many' and update_m2m_operation == 'set') or evaluation_type != 'value'">
+                                                                <span>by setting it to</span><field name="resource_ref"/>
+                                                             </t>
+                                                            <t invisible="update_field_type == 'many2many' and evaluation_type == 'value'">
+                                                                <span invisible="evaluation_type != 'value'">to</span>
+                                                                <span invisible="evaluation_type != 'equation'">as</span>
+                                                                <field name="resource_ref" invisible="not (value_field_to_show == 'resource_ref' and evaluation_type == 'value')" />
+                                                                <field name="selection_value" invisible="not (value_field_to_show == 'selection_value' and evaluation_type == 'value')" class="d-inline"/>
+                                                                <em invisible="not (value_field_to_show == 'value' and evaluation_type == 'value')" t-out="record.value.raw_value" class="d-inline"/>
+                                                                <code invisible="not (evaluation_type == 'equation')" t-out="record.value.raw_value"/>
+                                                            </t>
                                                         </t>
                                                         <button type="delete" name="delete" class="btn fa fa-trash fa-xl px-3 ms-auto" title="Delete Action" />
                                                     </div>
diff --git a/odoo/addons/base/models/ir_actions.py b/odoo/addons/base/models/ir_actions.py
index ac89d672444..cf4aa6dfb9a 100644
--- a/odoo/addons/base/models/ir_actions.py
+++ b/odoo/addons/base/models/ir_actions.py
@@ -527,6 +527,13 @@ class IrActionsServer(models.Model):
     update_field_id = fields.Many2one('ir.model.fields', string='Field to Update', ondelete='cascade', compute='_compute_crud_relations', store=True, readonly=False)
     update_path = fields.Char(string='Field to Update Path', help="Path to the field to update, e.g. 'partner_id.name'", default=_default_update_path)
     update_related_model_id = fields.Many2one('ir.model', compute='_compute_crud_relations', store=True)
+    update_field_type = fields.Selection(related='update_field_id.ttype', readonly=True)
+    update_m2m_operation = fields.Selection([
+        ('add', 'Adding'),
+        ('remove', 'Removing'),
+        ('set', 'Setting it to'),
+        ('clear', 'Clearing it')
+    ], string='Many2many Operations', default='add')
 
     value = fields.Text(help="For Python expressions, this field may hold a Python expression "
                              "that can use the same values as for the code field on the server action,"
@@ -944,7 +951,7 @@ class IrActionsServer(models.Model):
     @api.depends('evaluation_type', 'update_field_id')
     def _compute_value_field_to_show(self):  # check if value_field_to_show can be removed and use ttype in xml view instead
         for action in self:
-            if action.update_field_id.ttype == 'many2one':
+            if action.update_field_id.ttype in ('many2one', 'many2many'):
                 action.value_field_to_show = 'resource_ref'
             elif action.update_field_id.ttype == 'selection':
                 action.value_field_to_show = 'selection_value'
@@ -978,6 +985,16 @@ class IrActionsServer(models.Model):
             expr = action.value
             if action.evaluation_type == 'equation':
                 expr = safe_eval(action.value, eval_context)
+            elif action.update_field_id.ttype == 'many2many':
+                operation = action.update_m2m_operation
+                if operation == 'add':
+                    expr = [Command.link(int(action.value))]
+                elif operation == 'remove':
+                    expr = [Command.unlink(int(action.value))]
+                elif operation == 'set':
+                    expr = [Command.set([int(action.value)])]
+                elif operation == 'clear':
+                    expr = [Command.clear()]
             elif action.update_field_id.ttype in ['many2one', 'integer']:
                 try:
                     expr = int(action.value)
diff --git a/odoo/addons/base/tests/test_ir_actions.py b/odoo/addons/base/tests/test_ir_actions.py
index 94d5eead0d9..5c57433b485 100644
--- a/odoo/addons/base/tests/test_ir_actions.py
+++ b/odoo/addons/base/tests/test_ir_actions.py
@@ -226,6 +226,59 @@ ZeroDivisionError: division by zero""" % self.test_server_action.id
         # Test: country updated
         self.assertEqual(self.test_country.name_position, 'after')
 
+    def test_36_crud_write_m2m_ops(self):
+        """ Test that m2m operations work as expected """
+        categ_1 = self.env['res.partner.category'].create({'name': 'TestCateg1'})
+        categ_2 = self.env['res.partner.category'].create({'name': 'TestCateg2'})
+        # set partner category
+        self.action.write({
+            'state': 'object_write',
+            'update_path': 'category_id',
+            'update_m2m_operation': 'set',
+            'resource_ref': categ_1,
+        })
+        run_res = self.action.with_context(self.context).run()
+        self.assertFalse(run_res, 'ir_actions_server: update record action correctly finished should return False')
+        # Test: partner updated
+        self.assertIn(categ_1, self.test_partner.category_id, 'ir_actions_server: tag should have been set')
+
+        # add partner category
+        self.action.write({
+            'state': 'object_write',
+            'update_path': 'category_id',
+            'update_m2m_operation': 'add',
+            'resource_ref': categ_2,
+        })
+        run_res = self.action.with_context(self.context).run()
+        self.assertFalse(run_res, 'ir_actions_server: update record action correctly finished should return False')
+        # Test: partner updated
+        self.assertIn(categ_2, self.test_partner.category_id, 'ir_actions_server: new tag should have been added')
+        self.assertIn(categ_1, self.test_partner.category_id, 'ir_actions_server: old tag should still be there')
+
+        # remove partner category
+        self.action.write({
+            'state': 'object_write',
+            'update_path': 'category_id',
+            'update_m2m_operation': 'remove',
+            'resource_ref': categ_1,
+        })
+        run_res = self.action.with_context(self.context).run()
+        self.assertFalse(run_res, 'ir_actions_server: update record action correctly finished should return False')
+        # Test: partner updated
+        self.assertNotIn(categ_1, self.test_partner.category_id, 'ir_actions_server: tag should have been removed')
+        self.assertIn(categ_2, self.test_partner.category_id, 'ir_actions_server: tag should still be there')
+
+        # clear partner category
+        self.action.write({
+            'state': 'object_write',
+            'update_path': 'category_id',
+            'update_m2m_operation': 'clear',
+        })
+        run_res = self.action.with_context(self.context).run()
+        self.assertFalse(run_res, 'ir_actions_server: update record action correctly finished should return False')
+        # Test: partner updated
+        self.assertFalse(self.test_partner.category_id, 'ir_actions_server: tags should have been cleared')
+
     def test_37_field_path_traversal(self):
         """ Test the update_path field traversal - allowing records to be updated along relational links """
         # update the country's name via the partner
diff --git a/odoo/addons/base/views/ir_actions_views.xml b/odoo/addons/base/views/ir_actions_views.xml
index 9a4a30699a2..7acc05ea7d8 100644
--- a/odoo/addons/base/views/ir_actions_views.xml
+++ b/odoo/addons/base/views/ir_actions_views.xml
@@ -346,9 +346,12 @@
                             <field name="update_field_id" invisible="1"/>
                             <field name="value_field_to_show" invisible="1"/>
                             <field name="update_related_model_id" invisible="1"/>
-                            <span invisible="evaluation_type != 'value'">to</span>
+                            <field name="update_field_type" invisible="1"/>
+                            <span invisible="evaluation_type != 'value' or not update_field_type == 'many2many'">by</span>
+                            <field name="update_m2m_operation" class="oe_inline" invisible="evaluation_type != 'value' or not update_field_type == 'many2many'" required="update_field_type == 'many2many'"/>
+                            <span invisible="evaluation_type != 'value' or update_field_type == 'many2many'">to</span>
                             <field name="value" class="oe_inline" placeholder="Set a value..." invisible="update_field_id == False or value_field_to_show != 'value' or evaluation_type != 'value'" string="Custom Value"/>
-                            <field name="resource_ref" class="oe_inline" placeholder="Choose a value..." string="Custom Value" options="{'model_field': 'update_related_model_id', 'no_create': True, 'no_open': True}" invisible=" update_field_id == False or value_field_to_show != 'resource_ref' or evaluation_type == 'equation'"/>
+                            <field name="resource_ref" class="oe_inline" placeholder="Choose a value..." string="Custom Value" options="{'model_field': 'update_related_model_id', 'no_create': True, 'no_open': True}" invisible=" update_field_id == False or value_field_to_show != 'resource_ref' or evaluation_type == 'equation' or update_m2m_operation == 'clear'"/>
                             <field name="selection_value" class="oe_inline" placeholder="Choose a value..." options="{'no_create': True, 'no_open': True}" invisible=" update_field_id == False or value_field_to_show != 'selection_value' or evaluation_type == 'equation'"/>
                             <span invisible="update_field_id != False or evaluation_type == 'equation'" class="text-muted">Set a value...</span>
                             <span invisible="evaluation_type != 'equation'">