In Web View of FE NXT, the Custom Field tile represents what is referred to as attributes in Database View. Attributes themselves must still be created in Database View, but can be added or removed from records in web view as well. 

To add a Custom Field:
  1. Log in to FE NXT Web View
  2. Select the module where the record in question exists (Accounts Payable or General Ledger for example)
  3. Select the record type from the drop down (Invoice, Vendor, Account, etc)
  4. Select the specific record
  5. Find the Custom Fields tile
  6. Click the + button to add a custom field to the record
  7. Save