You can create tags in the Zevoy Hub under Settings by choosing Tags and clicking New Tag.
You can create different types of tags:
Fixed select tags can only be modified by the Admin in the Hub.
Open Select tags allow the users to add new tags when needed in the App.
Freetext tags allow the user a write-in option and are especially useful when choosing from numerous options e.g. project numbers.
Read more about tags here.