Setup stock
By activating the plugin and reopening the set of books a new icon will appear Also if you go to edit stock items there will be a extra tab if you ticked the "Show all groups" in settings you don't have to set-up anything on this tab.
If you did not tick "Show all groups" then you can set per stock item if this can be solded true the POS system by ticking the "Pos item".
Also if you selected the extra stock item you can enter a extra untaxed amount that will be added pre product purchase.
Printout 1 t/m 4 gives you a option to print out data on a printer if the item is selected. Like printing a ticket to the storage room for a specific product. That can be used to verify the buyer so goods can be handed out.
The groups that can be edited at setup->Groups can be linked to stock. There i also a tab multi group to get a product in more than one group, like the group discounts are runner products.
If you select the colours and add a image to the groups this will be used when displaying the group button.
Add group at Setup->Groups.