How to put ConEmu in context menu in windows 7, when click on folder to be able to choose Open in ConEmu?
Configure it like this:
Settings → Integration (or Settings → Features → Integration in older versions)
Set up the ConEmu Here group (don't misuse ConEmu Inside) and press the Register button.
These options are stored in the registry (Explorer related keys) and that's why these settings are not stored the ConEmu configuration, so the Save settings button is useless on that particular page.