This can be done via the Business Dashboard using Menu Editor within Online Ordering.
Follow the steps given below:
1. Select Menu Editor under Online Ordering on the dashboard navigation list.
![image](https://lh4.googleusercontent.com/iXg6dgfU0F-HrGMD4BmJbGd1ZK8KNldK1PxPkuyFJfFuIvWhvmt704UmemwqCfeBao09BTDI3ufuwVGHGRVCLALaTpor4wrSgoBf1nZgv4Dd1ztY_Ytd7Le69dKJCLO7dI1AVzz6)
2. Select Items from the floating menu tab.
![image](https://lh3.googleusercontent.com/pvarclLRsGD8U9oG1yhwM96bUJJewruMvGgnMbT6RuTOlCqYpgxcSvD5w7j-W7xq9mwft7JCs1ZMqMN_dAA7dDgbjKistIysEveoZ-zB6OXNCtTlQOVoU0n0c3mi5iBbYqlIk9YG)
3. In the Category column select the Add New option to do the same.
![image](https://lh3.googleusercontent.com/lYMzIIz7sTQBtJdjb1Ol_DUDYyUjRZ66SpWFJc8K8x0hUurMMQ8lqAKgaWXHC8_3nZZDHuIU7UJqHtPGSwgeHSBa3dod8t-zfsx0aDn3ThF-078X6pNSlXHWrJaKSdSrwlq-AkGG)
3. Enter the Category Name and Confirm.
4. You can further create a Sub-category by finding the category, selecting it and using the Add option that appears under the same.