Is it possible to create a different admin account with privileges only for ARC messages?

Is it possible to create a different admin account with privileges only for ARC messages?

ARC Message is the individual Portlet, which comes under Administrator Module. A User having Administrator privileges will be Super User and will be able to use other utilities within the Administrator module along with the ARC Message utility. So it is not possible to create different Admin account and provide privileges only for ARC Messages.