How can I set the screen to automatically time out after sitting idle for like say 30 seconds?

[ramscentral]

I am wanting to set my screen to automatically time out after sitting idle for a little while so that the employee will have to use their passcode to sign back in.  How do I do this?  This will help anyone from being able to use the register when the employee in charge doesn't know it. But also help to allow another employee to sign in if needed. 

[VanKalkerFarms]

In your iPad settings, click Display & brightness, click auto-lock, and set a time for the screen to shut off.  This will require you to wake up the iPad and then sign in with your employee passcode for Square (it will also require the iPad passcode if you have one set so it could be a pain).  30 seconds is very fast as you could be talking to the customer and then have to re login.

[ramscentral]

I was really just wanting the square to time out and not the whole ipad.  We will probably set it to like a minute to give a little more time. Do you know how to do this?