Hi Manoel,
You're not required to finish all editing tasks e.g. Proofreading, but if you want to use it, you need to go through its stages sequentially. Removing the Author proofreading stage will require some modifications. Do you have someone on hand with PHP experience? If so, I can provide some guidelines for removing this stage. Keep in mind that upgrading a modified version of OJS is a little trickier than upgrading a stock version.
Regards,
Alec Smecher
Open Journal Systems Team
---
Don't miss the First International PKP Scholarly Publishing Conference
July 11 - 13, 2007, Vancouver, BC, Canada
http://ocs.sfu.ca/pkp2007/