Sometimes it can be easier copying a Category (with or without items) rather than creating it from scratch. Below is a description of how it is done with Labregister.

1. Click OPTIONS.
2. Click Duplicate category.

3. A pop-up is showing that allows to copy the chosen Category either "with all its items" or "without any items (just the structure)". The name for the duplicate can be edited freely.
4. Click DUPLICATE to execute.

Tip: Because you can copy a Category without items, you can practically use any existing Category that you have access to as a template for a new one. This can be extremely time-saving.