bolt on to existing opencart shop

i have done an opencart site re dedsign for a client whos old site is [login to view URL] i need two seperate areas for when someone logs in to their account. One for general customers (standard opnecart features, account, history etc) but i also need one for a dealer which will have pages like available downloads, other pages which the main admin amends / adds. All i need here is account, insurance, logout, change password and any other page the admin decides to want to show so i don’t know if we have a separate tab at the top of admin area for dealer info where the admin can add pages and dealers or two areas one saying dealer pages, the other saying dealers (which the admin adds / deletes). alternatively if not a seperate area for dealer pages maybe a tick box within information pages that states if dealer page or not) whatever is easiest... open to suggestions One other thing that i need is that the admin user will enter a stockist into the system somehow and it on this page [login to view URL] will pull in the results. So whats the best way they enter it in the admin area, again as another tab or pull in through a excell file? please can you help as v urgent.