Categories are the top-level Entities in ORO POS menu system. Groups can be considered as child entities of these categories. Stores can rearrange items under a group using menu page designer. In a menu page managers can also include items from other groups.
Fig. Menu system
Special behavior
If there is only one group or category, the system would auto select that.
| Number of Categories | Number of Groups | Result |
| 1 | Many | Sidebar hides |
| Many | 1 | Topbar hides |
| 1 | 1 | Only shows Items |