We have an option called¬† ” Lock All Previous Timesheets” and “Lock All Next Timesheets” please follow the below steps.
Go to Master Data –> Click on Advanced Settings in that click on Working Days under Timesheet Setup¬
Click on Edit in Standard working day type select checkbox of¬†” Lock All Previous Timesheets” and “Lock All Next Timesheets”¬†and update at the bottom end. Please refer below the screenshot.
Now, previous & next timesheets are locked, it allows the user to enter only current week timesheet.