How to add a timestamp to sheet.

Hi All,

So I am trying to build a production tracker for my company. Part of what the owner wants is for the personnel on the manufacturing floor to be able to scan their ID cards with a scanner and go into work with a piece, and then repeat the same process when the are finish and get out of work with the piece they were working on. I have seven different manufacturing stations for each piece, and I need some kind of automation to happen when they scan their ID's that it automatically enters in a date and time of when they scanned their ID's for each piece, and then automatically enters a date and time when they leave work on a piece. I know date and time stamps are possible within Smartsheets, I am just not certain how to go into my sheet and set it up. Any help would be greatly appreciated.