Hello.
Please read firstly this instruction about initial configuration of the Booking Calendar MultiUser version: https://wpbookingcalendar.com/faq/multiuser-version-init-config/
Then please log in into the admin panel, as “Super booking admin” user.
Open the General Booking Settings page and in the right side at the “Permission section” please set correct user “roles” for access to the booking admin panel. You can set to all admin menu pages user role as “subscriber” later you can change it, if you will need this.
Then open the Booking > Settings > Users page, anc activate (if you do not activated yet) booking admin panel for specific WordPress User.
Now yo can log off and log in as that specific “Regular user”. You have the be able to access to the booking admin panel. Now, you can create the booking resources (while you logged in as this Regular User”, and then insert the booking form for this booking resource into the post or page. By doing this, you will have this booking resource(s) belong to this specific user.
If you will have any other questions, please contact the support of plugin here: https://wpbookingcalendar.com/contact/ This forum is only abut support of Booking Calendar free version.
Kind Regards.