Import properties - How to

Hi guys,
looking for Solidres HUB and having a Hotels DB of about 1000 records.
As far as I understand there is no an Import feature and I should have to do it through my phpMyAdmin, Am I right ?
I have to import properties into the #_sr_reservation_assets table, right ?

Assets
- Where the "Created by" could be the property owner and / or the HUB administrator, right ?
- Where "Partner" is a must in the moment that I want that a Joomla Registed user can login in the Frontend and complete / modify the Asset profile, right ?

Categories and Room Types
It is something that only the HUB manager can and have to add to have them selectable from the Partners, Am I right ?

Extras & Advanced Extras plugins
Can the HUB Manager add default extras description and leave to partners the ability only to set, when available, the price for that extra on his Asset ?

Employees
Please, Where can I find more informations about ?