regaring check

Hi Exports

have a new, easier problem. I’m on my last check 36500 and either need to add a new check lot or change the existing one to go through to 38500. (I have 2,000 new checks.) I don’t know how to change these and/or if my user ID has the authority to add/change these. Can you either explain where I need to go to maintain the check lots in SAP or make the necessary changes for me?