This option is currently relevant only for professional and premium plans, and works only on the web interface.
Step 1. From the dashboard, click “settings” and select “contracts”.
Step 2. Select the contract you want to edit and click
“Edit” as shown below
Step 3. Click “Timeclock conditions for web”,
Step 4. Check the box “It is mandatory to start
a task immediately after punch in” and save.