Add shutter mechanism hardware under shutter system construction
Add shutter mechanisms such as gas lift-up or rolling shutter mechanisms and use them in shutter system construction so pricing and BOQ follow.
Shutter mechanisms (such as gas lift-up or rolling shutter mechanisms) are not added under Connectors: Connectors' sub-categories are fittings such as joint clips, carcass connectors, screws and shelf pins. Shutter Mechanisms is a Hardware family of its own, next to Connectors: in the admin catalogue, a Hardware category's Add From Warehouse lists it with its sub-categories (Lift-up, Rolling Shutter, Connectors) and their groups to bring in.
Then in shutter system construction, use add shutter mechanism hardware and select the mechanism.
Pricing and BOQ follow from this setup.