Questions about the API: Users & Groups

[Baetchi]

Hello,

I'm currently evaluating syspass.
Due to a mass of passwords I want to use the API to migrate the accounts from the old passwordtool to the new one.
While testing with the API I expired 4 Problems/Questions:

1. There is no API Calls documented to view the users or get the userID which I can be insert to the userGroup.

2. If i view an Account I see there only one userGroup - in the GUI I can add multiple userGroups to an Account.

3. API Right Management: If i want an API User which has all 29 rights: Do I really need to add each right in a new Line in the GUI?

4. API Right Management: If my API User is part of an Administrator group: Why can't I see all Accounts via API?

Thank you very much.