@kre, welcome to the community.
First: you might check out the following post; it’s full of tons of helpful tips to help you get stared with using the community to find answers.
Dear valuable members and users,
For a long time I’m seeing a lot of multiple and concurrent posts, posts like novels seeming to aim the Pulitzer Price, exactly the same questions by the same user but paraphrased/re-phrased etc. Being a dedicated community member and an AppSheet developer who is reading around 2.5K posts per day, I urged myself to tip on some good advice and best practice BEFORE posting something in the community:
#1 - APPSHEET DOCUMENTATION
AppSheet has a very good help do…
Not with how you’re wanting to do things.
With your setup, you’d have to share the credentials to the account with the pro license - because AppSheet counts licenses based on the email address accessing things.
You’ll need to have a different license for the person, and they’ll need their own AppSheet account.
You can then share your apps with them, and select what data they have access too.