I'm not sure I understand your question. Can you elaborate on what you're trying to do?
The term "team member management" is the name of one of the Dropbox Business API access types. That's a property of a Business API app you select when first registering the Business API app, not something you would invite other members to.
With a Dropbox Business API app registered for the "team member management" access type, you can have your app prompt a team admin to authorize the app to connect to their Business team (or you can connect it to your own team if you're a team admin). The result is an access token that can be used to access the Dropbox Business API endpoints for managing team members, such as /2/team/members/add, etc.
We love to learn from the educators who use Dropbox. Whether you teach kids, teens, adults or a combination of all three, we want to know what apps and integrations you use with Dropbox to help with teaching. Which of the ones below is your favorite, or most used tool?