1. Navigate to Administration> Attribute Categories
  2. Click on Add and enter Record type and Attribute group
  3. For Data Type, set to Code Table
  4. For Code Table, to the right click the white button with a yellow star to add new Code Table
  5. Create a Name and DB Table Name
  6. Underneath Category, click Add a code table category
  7. Click Save
  8. Click Make available in lists
  9. Click Save once more