What would be the process for updating the Contract Number with the year as a prefix

Summary:

We are looking for a way for the client to update the starting number of Contracts every year. Example this year would start with 2023001 , next year would be 2024001 etc.

We have done the initial 2023001 but the field is not editable anymore. Is there a best practice on updating this?

In our attempt, we first added a new document sequence category using 2024 in the title (for next year). We then added the Business Unit Document Sequence (creating a new one also using 2024 in the title) and setting the starting sequence as 2024001 (properly start and end dated). We then went to the Contract Types and tried to update, but we were not seeing our category.