I’m a super admin and I want to give an admin the ability to add new users…?

To follow up to xLRDxREVENGEx’s answer, here’s a screenshot of the checkbox you need to check in the network admin section:

enter image description here

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)