Staves

Hi all,

I'm arranging a vocal piece with standard voicing (SATB) and I'm having trouble with the staves. I'm trying to add multiple staves for voice doubling (Soprano 1 and Soprano 2, Alto 1 and Alto 2, etc...) but I don't know how to add in the extra staves. I tried writing the separate parts in divisi but I can't have a split between two different note lengths, it's either one or the other. I'd really appreciate if someone could help me out with this issue. Thanks!