How to establish to which app the payment per user that I make corresponds to

[MarcosL]

I have an app (let's call it App_A), in prototype mode, which will continue as a prototype for a while, but already needs more than 10 users to participate (15 to be exact).
In the developer account that said app belongs to, I have other apps (let's call them App_B, App_C, etc.), which do not require payment plans yet.
The question is:
When making the license payment for the 15 users that I need for App_A, how do I tell Appsheet that this payment corresponds to App_A and not to the other apps?
(I clarify that we do not yet have appsheet notifications that we must make the payment, but it does not allow me to add new users above the 10 that are already added).
Thanks in advance for your comments.

[Joseph_Seddik · Accepted solution]

AppSheet subscription plans are per user not per app. Any user of yours can use any number of your apps (if you allow them). You are not going to be charged extra because your 10 users are using two or more apps. 

Another per-application subscription plan is the Publisher Pro, but seems that you won't have it; since you require user sign-in. 

[MarcosL]

Thank you very much Joseph.