Custom is for when you create your own transitions or edit a pre-existing (only the Alpha ones I think). As soon as you do that the custom folder is created.
You can add any transitions to favourites, if you want a list of the ones you want to use.
Regards
Phil
ps, looks like The Shadowman beat me to it!
This message was edited 1 time. Last update was at Mar 18. 2018 07:23