Your comments

Yes, this will be fine- contact details- two names, phone, email, etc.

Now if I enter as user, on the "i" icon  I see only "Listing- number of files and Size /calculate/"- I guess it is optional what you see in this panel.

Also, we most commonly share with groups, so there must be a way to expand the group and then be able to click on each name, or directly list only users, disregarding the group the admin created for the project. Whatever is easier for you.

Thank you!