First, make sure your company setting has this enabled or as a User you will not be able to amend previous day clock in/out. This will need Administrative access or you can share to your Administrator too here is the guide for the settings.
Once the setting is allowed, see below steps:
Step 1: Once log in to the system kindly click 
and click 
Note: The step is not available in the Mobile App, this is only possible using the browser
Step 2: In MY CLOCK HISTORY, click EDIT CLOCK DATA as shown below image
Step 3: Input the necessary details and once done click SUBMIT
