1-on-1 chat with sendbird

I am building a marketplace website where I would like to connect my users and seller. I prolly want 1-on-1 group channels for this.

My app currently has a python backend and javascript frontend. I want to have full control over which users being able to

But If I provide the frontend with the following:

  1. Session token
  2. Application id

Would the users just be able to open “group channels” with other users them selves. I am trying to understand how I can control this.