Use the URL parameter “saveURL2” to redirect to a custom page after the clone operation. The value of this parameter is a URL encoded string. If “[newid]” is included in the value, it will be replaced with the record Id of the newly cloned record Id.
The below example will navigate to a custom Visualforce page, and the new record Id will be passed as a URL parameter. The “saveURL2” value is URL encoded except for the constant “[newid]”.
{!URLFOR('/apex/lcrm-scp__scpclone', null, [rid=Opportunity.Id, cfg="opportunityConfig"])}&saveURL2=%2Fapex%2FcustomVfPage%3Fid%3D[newid]
The below example redirects to the native Salesforce edit page.
{!URLFOR('/apex/lcrm-scp__scpclone', null, [rid=Opportunity.Id, cfg="opportunityConfig"])}&saveURL2=%2F[newid]%2Fe%3FretURL%3D%2F[newid]