is there a possibility to change the description per event?
Viewing post in [CGMZ] Encyclopedia for RPG Maker MZ comments
You will be able to change the note tag description in a future update, but for right now no. I am working on a pretty large update for this which will allow the use of text codes (\c[x], \i[x], etc) as well as some other requests I have received over the past few months and changing description will be included in that update.