Locate setting in your homepage
Then click on (General)
Scroll down to Guided Access
Turn on and set a 4 digit password
Set a password you can remember
Go to the app you want open open and triple click the home button to set it up do the same it will ask you for that password to deactivate..
This is ideal for mobile payment app like square, intuit payment when you don't want your employee or kids to access other apps. For more tips like this go to Mevup.com like and follow & share