Possibility of conflict for an access token?

Hi, I'm Sarah,

And I have a question,

Here I integrate ont the intranet of my company, a possibility of edited or create a report or dashbord with Power BI, I use the JavaScript API.

But here I would like to know, because many will use this function, sometimes simultaneously, if I have to generate an access Token by user account, or if only on access token for the report is enough. So that there is no conflict if several people use on their account at the same time the report?

Unless I have to manage in my code the fact that only one person at a  time can edit or create a report and thus deactivate the edit or create buttons while another person is on the report?

Waiting for an answer, Sarah.