Accessing Authentication token

Summary: Accessing git using Authentication token in local system

Content (required): We are using federated users and enabled SSO for VBS, but unfortunately federated users were not able to access git locally.

So we are trying to access git using taken based authentication,

our question is how many times we can generate the token if we go for 30 mins expirations ? after 30 mins can we generate a new token if needed ?

And is the token should be generated by every individual who wants to access git locally ? and every time he wants ?or the admin can generate tokens for individuals ?

Can you also please help with the syntax for token based authentication.