I'm writing a choral piece with two staves, a top treble clef stave that accommodates the soprano and alto parts, and a bass clef staves that holds the tenor/bass parts. However, the piece, towards the end, becomes very contrapuntal, and trying to get the text into each of the four parts is very confusing. So, I would like to, at that place, switch to 4 staves-the top 2 treble clef for the women, a tenor clef for the 3rd staves, and the final staff in the bass clef for the basses. Now when I go back to a more homophonic texture that can be accommodated with just 2 staves, I want to switch back to the original treble clef and bass clef. How do I do this?

Thanks-

Paul Kolar