I set out a message a few days ago about Viola Clef in relationship to concert / transposed scores.

My goals:

1. Write for 5 staff string ensemble
2. Use "Display in Concert Pitch"
3. Using Treble Clef for Viola
4. Use written octave for Double Bass
5. Be able to edit "In Concert Pitch"
6. Be able to print as transposed parts, without having to change clefs or adjust octaves

My obstacle:  Finale has provided four options, but none of them accomplished this exact list of goals.  However, David C at MakeMusic did help me understand the Viola question.  That in turn led me on to a trick that made for a very elegant "work around."

I set up my score this way:

1. Violin and Cello staves as per normal, no problem
2. Viola staff — using the score manager create the following clef and transposition settings
3. Viola First Staff — Set to Treble
4. Transposition — Set to OTHER, and choose "no transposition", check the "clef" box and choose VIOLA clef
5. The trick is to do a similar "slight of hand" for the Double Bass (Arco Bass, Bass Guitar) staff as well
6. DoubleBass First Staff — Set to Bass8vb (That is the F clef with a small 8 below it)
7. Transposition — Select Transposition "UP OCTAVE", then check the clef box and choose the standard Bass (F) Clef

Now, when you are working with a transposed score (i.e. WITHOUT "Display in Concert Pitch" and "Keep Octave Transposition") you will see

1. transposing instruments in their written keys
2. Viola in viola clef
3. Double Bass, Bass Guitar in their written octave (but still transposed 8vb for MP3 exports)

Alternatively, when you select "Display in Concert Pitch" you will see:

1. Transposed instrument in their sounding pitch (concert pitch)
2. Viola in treble clef
3. Double Bass is still in the correct written octave, even though you enter pitches 8vb in the actual sounding pitch

If you are reading this thread, I hope this is clear and helpful. If not, please ask questions here.