'Tone Model skins can now be updated via edit window'. How?

[AxyMcGuitarFac3]

So the release notes for 1.20 say that in Tonex player, "Tone Model skins can now be updated via edit window."

Maybe this is a dumb question, but how exactly do you do this - and where even IS the edit window? The only thing I know how to change is the names of presets.
Can anyone help a (dumb) brother out?

[AxyMcGuitarFac3]

Nm... User error.