Category with shortcut Keys

Could we have shortcut keys to classify or declasiffy a message in a category

Alt 0 to declassify, Alt 1 to classify in the first category …

Like in thunderbird in fact !

By category, do you mean Tags?

If so, go to Menu > Tags, where you can assign keyboard shortcuts to tags.

Thanks a lot Gary
Now I’ve got my functionnality
Unfortunately, we haven’t a shortcut to reinitialize all the categorry on an item