Name the test, this will only be for your use.
Set different filters you want to target.
Slide the the new user amount to a certain percentage of new users that you want to be included on the test.
Input the key you want to use for retrieving the value, A/B tests will be distributed like a remote config.
Input the value you want to be distributed, add more config groups to diversify more of the test.
Set the start and end dates of when you want to expirement the A/B Test.
Select the Goal metric you want to target the test towards.