1. Click the gear ⚙ in the upper right-hand corner.
2. Click Account and Settings in the Your Company section.
3. Click Advanced on the left-hand side.
4. In the 3rd option, Chart of Accounts, you’ll see Enable account numbers is off. Click the pencil ✎ on the right-hand side of this section.
5. Check the Enable account numbers box, you’ll see “off” change to “on.”
6. A Show account numbers checkbox will appear, check this box as well.
7. Click the green Save button.
8. Click the green Done button in the lower right-hand corner of the screen.