Approve a current session

Using TPAM API, if the request ID is available can we do the following?

1. While a ticketsystem validation is happening after a manual session request, if a validation is successful can we send approvesessionrequest method as part of the ticketsystem validation (assumption here is we are using a rest service to do the ticket validation)

2. Can we use an elevated TPAM user to approve session request for all platforms using a custom client application?

Appreciate your feedback.