Measures per line?

[Rebecca Gilbert]

How do I specify the measures per line maximum that I would like?  The 
piece I am working on is a bit crowded.  Or, am I thinking backwards and 
do I have to change the spacing between notes to fix this?  How do I 
specify that?

Thanks muchly.

Rebecca

--
"Believe it is possible to solve your problem. Tremendous things happen to the believer. So believe the answer will come. It will." 
	--Norman Vincent Peale