how to control function available to different user in demantra Bussiness modeler

hi ,

we donot want user access all the function in bussiness modeler .e.g. we only grant 'Security'  menu to the user. so the user has the only permission to create user in Bussiness modeler.what can i do?and  how to control function available to different user in Bussiness modeler? how to control menu available to different user in Bussiness modeler?

Thanks.

Andy