There is a few variants to add new sets.
1. Creating empty set
In top menu on the left, there is a button "+". On that page you'll find a page where you can add everything you want or have rights. Choose Set and fill as much fields as much you can find information.
Attention! If there is no such company / game / faction for you set - you'll need to add them first and choose them in your set after it.
2. Copying set's
In the case you want to add set, that have similar settings as already existing, i.e. with same company, game, faction, scale etc - you'll better to use Copy button 
from set's page. By clicking this button all main information will be copied to new set and you need only fill changed information.
3. Automatic adding
Automatic system have a complex possibilities - from uploading sets from manufacturers sites to bulk sets changes.
To get sets from manufacturers sites it's needed difficult programming and frequent working support. But when it's works - it's allow to get all new items and changes, even in automatically mode. For this functional users don't have access.
4. Bulk update
Possibility to use bulk sets update. In example - updating all prices, change scale for sets of needed company and faction only and etc. For this users don't have an access to avoid spoiling information. But we can give this access to moderators and trusted members - write us.
