diff --git a/hr_attendance_manage_own/models/hr_attendance.py b/hr_attendance_manage_own/models/hr_attendance.py
index 5269fbe..c063cf5 100644
--- a/hr_attendance_manage_own/models/hr_attendance.py
+++ b/hr_attendance_manage_own/models/hr_attendance.py
@@ -37,11 +37,25 @@ def _check_overtime_status(self):
                     _("You are not allowed to change the overtime status.")
                 )
 
+    def _get_write_bypass_fields(self):
+        param = (
+            self.env["ir.config_parameter"]
+            .sudo()
+            .get_param("hr_attendance_manage_own.write_bypass_fields", "")
+        )
+        return {f.strip() for f in param.split(",") if f.strip()}
+
     def write(self, vals):
         if not self._is_own_manager_only():
             return super().write(vals)
         if self._is_attendance_manager_for_employees(self.employee_id):
             return super().write(vals)
+        # Strip validated_overtime_hours so the compute determines its value.
+        # The form client may include it in the payload when saving.
+        vals = {k: v for k, v in vals.items() if k != "validated_overtime_hours"}
+        bypass_fields = self._get_write_bypass_fields()
+        if not set(vals.keys()) - bypass_fields:
+            return super().write(vals)
         if self.filtered(lambda r: r._is_processed()):
             raise AccessError(
                 _(
@@ -49,9 +63,6 @@ def write(self, vals):
                     "been processed (approved or refused)."
                 )
             )
-        # Strip validated_overtime_hours so the compute determines its value.
-        # The form client may include it in the payload when saving.
-        vals = {k: v for k, v in vals.items() if k != "validated_overtime_hours"}
         return super().write(vals)
 
     @api.ondelete(at_uninstall=False)
diff --git a/hr_attendance_manage_own/readme/CONFIGURE.md b/hr_attendance_manage_own/readme/CONFIGURE.md
index 981286f..60faba0 100644
--- a/hr_attendance_manage_own/readme/CONFIGURE.md
+++ b/hr_attendance_manage_own/readme/CONFIGURE.md
@@ -3,3 +3,12 @@ To configure this module:
 1.  Go to *Settings \> Users & Companies \> Groups*
 2.  Find and select the "User: Manage own attendances" group
 3.  Add users to this group to allow them to create and edit their own attendance records
+
+Optionally, you can configure fields that bypass the processed-record write
+restriction. This is useful when other modules (e.g. `hr_timesheet_sheet`) need
+to write certain fields on attendance records that have already been approved or
+refused.
+
+1.  Go to *Settings \> Technical \> Parameters \> System Parameters*
+2.  Create a parameter with key `hr_attendance_manage_own.write_bypass_fields`
+3.  Set the value to a comma-separated list of field names (e.g. `sheet_id`)
diff --git a/hr_attendance_manage_own/tests/test_hr_attendance_manage_own.py b/hr_attendance_manage_own/tests/test_hr_attendance_manage_own.py
index c5ff69f..71456cc 100644
--- a/hr_attendance_manage_own/tests/test_hr_attendance_manage_own.py
+++ b/hr_attendance_manage_own/tests/test_hr_attendance_manage_own.py
@@ -187,6 +187,18 @@ def test_full_manager_bypass(self):
         self.attendance.with_user(manager_user).action_approve_overtime()
         self.assertEqual(self.attendance.overtime_status, "approved")
 
+    def test_write_bypass_fields_on_processed(self):
+        self.user.groups_id = [Command.link(self.own_manager_group.id)]
+        self.attendance.overtime_status = "approved"
+        self.env["ir.config_parameter"].set_param(
+            "hr_attendance_manage_own.write_bypass_fields", "check_in"
+        )
+        self.attendance.with_user(self.user).write({"check_in": "2026-02-26 09:00:00"})
+        with self.assertRaises(AccessError):
+            self.attendance.with_user(self.user).write(
+                {"check_in": "2026-02-26 11:00:00", "check_out": "2026-02-26 18:00:00"}
+            )
+
     def test_attendance_manager_bypass(self):
         officer_user = self.env["res.users"].create(
             {