Add the ability to change the categories of signed documents, and an option to bulk change categories of other documents where a signature was not requested.

This would help administrative users in reorganising employee documents into different folders to make them more accessible to the team and employees. This would solve issues with multiple folders with similar names (e.g. 'contracts' and 'contract of employment') that could be merged.

It would save time from manually downloading documents, and taking a screenshot of the 'signed' section, then saving this screenshot in the new folder with the document.