On your projects screen, press the icon with the cloud and arrow pointing up.
This will bring up the hub form where you can add a title, description, screenshots etc.
Sidenote: All behaviors that manipulate objects will output Object ID(s). Some behaviors can have multiple output fields and you can select whichever one you want. š
@RobinsonX thank you for valuable information, now Iām working on affinity designer for some concepts, characters, and work flow. I will make a new post once I made some success.