Step 1: Go to "Invoices" in the left navigation.

Step 2: Select "Recurring Templates" in the invoices table.

Step 3: Click the three dots next to the template you want to update and click "edit."

Step 4: Scroll to the bottom of the Edit Invoices modal to add or remove units.

Note: click the X next to a unit to remove them. And use the search box to add units.