I spent a few hours trying to achieve this. Unfortunately i failed and come here for help :
1. I can't find a way of creating a management scope containing one transport rule. What kind of filter to use ? A recipient ? A server ? And to filter on transport rule ?
2. I tried creating a management role (child of builtin management role "transport rules"), letting the parameters "applyHtmlDisclaimer" the only available parameter in the set-transportrule roleEntry and removing any other delete-/new-/write-/set- roleEntry. Still the disclaimer remains non editable in ecp for the user. Is there other attribute mandatory for any modification ?
The goal for all this is to allow some departements chiefs to change anytime they want/need the disclaimer added at the end of their departement employees mails, and only their rule, and only the text, not any other parameter. Thanks you.