Let's actually do this a different way. Each placement should have its own folder. Think of the settings file as a way to set up a folder. But each client should have several folders, one folder for each placement. Otherwise there is no way to review the data if you are jumbling together lots of different placements all in one folder, this will jumble together all of the results. Keep each placement separate in its own folder. Not to mention, it's just a pain having to use different settings files within one folder, as you have discovered. It's much easier to just switch folders when you switch placements.
Regarding naming the folders: Let's say "Kevin" is using a T3-T4 placement and an Fp1-Fp2 placement. Make two individual folders for Kevin. When naming the folders, use the strategy of calling each folder "T3-T4 Kevin" and "Fp1-Fp2 Kevin". This way, in the name ID, it will show the client name first, and it will alphabetize all of that clients folders together. This will look like the following in your folder list:
KeviT3-T4
KeviFp1-
The advantage is that you can find all of Kevin's files together. Also, in the comments field, I recommend putting Kevin's full name.
This method also makes a lot of sense for home use, now if you want to set up 20 sessions, each 10 minutes, of T3-T4, and then 20 sessions, each 10 minutes of Fp1-Fp2, you can send the client home with these restricted folders using session librarian, and then they will follow exactly those folders until all 20 sessions of each type are used up and come back for more folders. (On a home use system they cannot get to the “View or Change Settings” button).
Kurt Othmer