When I invite a user through user management, I can choose there role for them. Either basic, trusted, or site administrator. When I put them in trusted they are put into the jira-servicedesk users group automatically and use up a license. I want to know what the difference is. Could I do either or and it means the same thing or are these two different things? Same goes for basic, could I give them a basic role or could I make give them the project role of service desk customer? If I decide to list a group under product access for JIRA in user management do the people in those groups use up a license? I feel like in JIRA, you can do a lot of different things but get the same result like what I have stated above, is this true. Thank you.