Snapshot Name - how to change

how could I change the name of a snaphot ?

Hello Heino -

and … Welcome to the Cantabile forum!

I think you are referring to names of presets for plugins? I cannot locate the documentation at the moment, but if you go to the control icon to the right of the preset name (three horizontal bars), it has a “Rename Program” entry. Here’s a snapshot:

… this is the old MDA Piano plugin, which has a tiny interface … so the preset name is truncated, but I hope you get the idea.

Many thanks