Ability to amend roster display 18hr parameter so we can see the entire rostered shifts on computer

I notice the Timeframe displayed on the roster is from Midnight through till 0600 the following day (18hr display) . I presume 18hrs is your parameter, Is it possible to have ours so it goes though till 0900 in the morning therefore i presume it would need to start at 0300 rather than midnight. We have 3 x Sites which regularly run through till 0830 daily so it would be great to have a display whic reflects our standard roster