A Collection is like a folder in which all your 'Projects' (soon to become Product Costings in Z.Hub will sit.
Tip: Only the 'Season' is mandatory on a Collection.
Click [+ New Collection] via the List OR Grid Views
Enter the Collection Name and click [OK]
The season you are currently in will be assigned to the Collection by default as the Season is mandatory, but this can be changed to another season if needed.