Hi there, @FredW2.
You have the option to add a column to your invoice template. From there, manually enter the dates.
Follow the steps below to add a column:
- Go to the Lists menu at the top, then select Templates.
- Locate and double click the Invoice template you use when creating the invoice.
- Tap the Additional Customization... button at the bottom.
- In the Columns tab, put a check for Other 1 on the Screen and Print box.
- Enter the Title you want to show on the invoice form, for example, Billing for Quarter.
- Hit OK.
Once done, create an invoice and make sure to select the template you created. From there, it will show the additional column.
Refer to this article for the details: Use and customize form templates.
In case you'll encounter issues when customizing templates, see this resource: Fix common issues when you use and customize templates.
Don't hesitate to get back to me if there's anything that I can help you with. Keep safe!
