When you register or deregister your residence, you will receive an official registration confirmation as proof. Further information can be found here.
If you want to appoint another person to manage a branch for the commercial manufacture of weapons or for the commercial trade of weapons, you need a representative permit
If you want to appoint another person to manage a dependent branch for the commercial manufacture of weapons or for the commercial trade of weapons, you need a deputy permit
A trade requiring supervision according to § 38 GewO (also called trust trade) is, for example, motor vehicle trade, travel agencies, key services, trade in high-quality second-hand goods and consumer goods, marriage brokerage, trade in precious ...