Selecting custom directory for "Resume on automatic track change" (iPod Video)

[yester123]

I am using Rockbox with an iPod Video.

I am trying to select a custom directory for "Resume on automatic track change", under "Automatic Resume" in "General Settings".

The manual says that selecting the "In custom directories only." option should open a text editor, but what I am seeing is a list of available directories that I can scroll through but no obvious way to select them.

The relevant section of the manual is here: https://download.rockbox.org/daily/manual/rockbox-ipodvideo/rockbox-buildch8.html#x10-1640008.8

What am I missing?

Thanks for your help!