[Zope] Managing Content Access and Multiple Users

[Francisco Chamorro]

Hi everyone, I have a process question and wanted to know what tools are 
available in zope to help me solve this issue.  A total of 6 
developers/producers access zope on a daily basis and make updates to pages, 
sometimes the same pages.

The problem I'm having is that sometimes one developer will make changes to 
a page, push those changes to our preview environment for client review and 
wait for client feedback.  Then another developer will access the same page, 
make his own changes (not realizing there are changes not approved) and push 
his changes and the non-approved ones to live, causing products to go live 
before they are supposed to etc.

What tools (if any) are available to help me solve this issue?  My first 
thought was to install CVS, but I'm not entirely sure that will solve it 
entirely.  Are there any tools available for work flow in zope?  Any help 
would be really appreciate.

Thank you.

-Francisco