How do I enable cpu usage for all users?

[Dave Martini]

Hi,  I have Red Hat 3.0 and want to enable all of cpu usage available 
for all users that log in how do I do that and check to make sure it's 
set? It looks like normal users only have 25% of the cpu available to 
them is that right?

Thank you.
David Martini
LLNL