In the desktop client you can use tokens to create a custom toolbar button. It would be helpful if there was a token for the currently selected folder name (not the current folder name that you're in). I can get the currently selected folder entryID but not the folder name. Instead, I’m having to have the form process call a workflow that uses the entryID to move a saved copy of the form to that folder instead of just being able to save it directly there by passing the token.