Hi - welcome to the OFN Community.
I think your users questions will be more easily answered in the user guide. This guide is pinned to every user’s dashboard when they log into the platform.
The convo you link to above is not the one to follow! It is a conversation about the OFN ‘inventory’ feature. This is a very advanced inventory control feature, that is confusing to use, for smaller suppliers/producers. Most producers will never need to use this ‘inventory’ feature, and should ignore it - at least when they are getting started - to avoid confusion.
So, I’d direct producers/growers to their product management page to set and update their stock under the category ‘on hand’ amounts.
Detailed in the user guide here.