protected void addRoleToGroup() 
    { 
        RoleInfo role = new RoleInfo();
            
        // Set RoleInfo properties except RoleID
        role.RoleName = "CMSDeskAdmin";
        role.DisplayName = "CMSDeskAdmin";
        role.Description = "some description...";
        role.SiteID = CMS.CMSHelper.CMSContext.CurrentSite.SiteID;
        role.RoleGroupID = this.groupEditElem.GroupID;
        role.RoleIsGroupAdministrator = true;

        // check if the role name is unique in the given site
        if (!CMS.SiteProvider.RoleInfoProvider.RoleExists(role.RoleName, CMS.CMSHelper.CMSContext.CurrentSite.SiteName))
        {
            // Insert new RoleInfo for current site
            CMS.SiteProvider.RoleInfoProvider.SetRoleInfo(role);
        }
        else
        {   
            // Role with the same name already exists in specified site
            role = CMS.SiteProvider.RoleInfoProvider.GetRoleInfo("CMSDeskAdmin", CMS.CMSHelper.CMSContext.CurrentSiteName);
            
            //checks if role is not null and if it is not related to another group
            if ((role != null) && (role.RoleGroupID ==0))
            {
                // Make some changes
                role.RoleGroupID = this.groupEditElem.GroupID;
                role.RoleIsGroupAdministrator = true;
                // Update the role
                CMS.SiteProvider.RoleInfoProvider.SetRoleInfo(role);
            }           
        }
    }