Quite simply, select any document and double-click the entry or the Document properties icon.

Now select the 3 tab "Tagging" and the area "Document status".

Now click on "Edit document status".
Now select the entry from the list you want to edit and click on it. Edit the entry and then click on "Save current entry".
If you would like to create a new entry, click on "Create new entry", select background color and font color, enter the name and if necessary make a note and save the entry by clicking "Save current entry."