Installing and activating Points of Sale add-on is not enough to manage your products in your Points of Sales. You need some initial configuration:
- Go to Products tab and click on Products
- Click on the desired product to go to its configuration page
- In the Product data area select the Variable product type
- In the Attributes tab add an attribute with the following parameters:
- Name: POS
- Values: 0
- Check Visible on product page
- Check Used for variation
- In the Variations tab select Add variation and click on Go button
- Select Available for POS in the select box of the new vreated variation
- Click on save changes
Now you can create your points of sale.