Updating an Organization Field when Opportunity is "Closed Won"

Updating an Organization Field when Opportunity is "Closed Won"

When selecting "Closed Won" for a current Opportunity, I would like ZOHO to automatically update a custom field in the Organization section called "Client Status".  We sell software so the goal is to automatically change the clients status based upon an opportunity closing.  I can't seem to figure a way to do this.  Any suggestions?