Making ERD for computer repair company can someone help me draw this out please. Draw me ERD and add attributes with relationships. Add to it if you can this is my general idea. I need to see what it would look like

I have different types of USERS for a system.

A USER can be one of the following

CUSTOMER ---> Can only have one ACCOUNT ----> Which may have 0 or more UNITS

REPAIR_TECHNICIAN ----> has access to list of UNITS --> can change STATUS of UNITS ---> Can move UNITS to a different location in the repair shop. Can deduct parts from PARTLIST

SHIPPING ---> can view UNITS and ACCOUNT and add a charge for shipping to ACCOUNT per unit. Only one charge for shipping per unit. can move unit to different location

BILLING----> can view UNITS, PARTLIST, ACCOUNT and edit/add/remove charges

INVENTORY_CONTROL ---> can make full changes to PARTS LIST edit/add/remove/organize

SQUARE TRADE ---> can view ACCOUNT and UNITS. Can request info from BILLING and SHIPPING

MODERATOR ----> can add/remove/edit users in the different groups below moderator can view and edit BILLING, SHIPPING, PARTSLIST , REPAIR_TECHNICIAN work as well as ACCOUNT and UNITS

OWNER ---> Can make changes to whatever they want and view what ever they want