I need to create a group a group of pseudo admins in AD to manage users at a remote location, but I'm not sure how this should be done
Based on your question and comments that it will be a single forest/single domain -- then it's just a matter of proper OU structure and Delegation of rights within AD.
See here from Microsoft for more info: https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/plan/delegating-administration-by-using-ou-objects
Basically you are creating specific OU structures and then setting rights for the IT admins based on your structure you want to delegate.