To add an item or service to all FUTURE invoices, go to the Resources Tab>Items & Services.
To edit an Item/Service, click the pencil button.
You will see a box you can check to “Add This Item/Service to All Future Invoices“
NOTE: The change saves automatically and will only be applied to FUTURE invoices created after the change was made. It will not add the item/service to any past or existing invoices.