If you do not want your staff to be able to clock in/clock out using their personal devices, please follow the steps shown below:
Steps:
Step 1: Login to your account
Step 2: Click on 
Step 3: Go to 
Step 4: Click on 
Step 5: Search for the name of the employee whom you would like to be exempted from the use of the mobile app for clocking in/out and then click on the 
icon under the Actions column
Step 6: Put a tick in the box under the 
column
Step 7: Then click on 
(green button) to save the settings.
Once this is configured, the employee will not be able to clock in/out using the mobile app.