To tag an item:

Step 1: Visit Setup > Menu Setup.
Step 2: Search for the menu item you want to tag in the search field.
Step 3: Click the Edit button against the menu item.
Step 4: Scroll to the Tags section.
Step 5: Type in the tag and hit the Enter key to add.
Step 6: Click Update.
Step 7: Finally, click Refresh POS Menu Items