How to define time category for Public Holidays ?

Summary:

Define time category for Public Holidays

Content (please ensure you mask any confidential information):

Hi,

Can you please guide us on how to define a time category for Public Holidays?
We need this, so to be able to work with this time category in fast formulas.

Thank you,
Elena

Version (include the version you are using, if applicable):

24A

Code Snippet (add any code snippets that support your topic, if applicable):