How to switch to 12 hour format?

How to switch to 12 hour format?

Hello. I'm trying to create a form within creator that allows my employees to clock-in/out but the date-time field in the forms only allows for 24 hour format? We need 12 hour format. How can I get this going?
Also, I need two forms, one for clocking in upon coming to work, and another for clocking out at the end of the day. How can I get these two forms to work together on one report?
Thanks