Removing the Author from the Proofreading Stage in OJS 2.4

Hi there, I hope someone can help.

My journal colleagues and I are relatively new adopters of OJS, and are still getting used to it, so bear with me!

Because we have a very rigorous editorial and copy editing process, we don’t need to email the author at the proofreading stage (this is never something we have done, and something we think would cause confusion for our authors). Would there be the possibility of removing the author from the proofreading stage? Can someone help me as to how this might be done?

With best wishes and thanks,