Use Package Library along with Component Detection Wizard:
1. Build Component and Package Library:
Whenever using Build Component (menu: Assembly | Build Component...) to create your components from Gerber, there is an option to add the component details to a Package Library file.
2. Use Component Wizard to Save time:
After you have performed Build Components enough times you will start to build a library of footprints. This library can be used to automate the Build Components process with command: Components Detection Wizard (see menu: Assembly / Components Detection Wizard...). Whenever opening another Job or workspace with similar components use Component detection Wizard.