Thank you for reaching out to us, Philip42. Please note that to make the billable checkbox available, you need to enable the "Make expenses and items billable" option in Accounts and Settings.
Here's how you can do this:
- Go to Gear icon,then navigate to Accounts and Settings
- Select the Expenses tab. From the Bills and expenses section, select Edit.
- Turn on the following:
- "Show Items table on expense and purchase forms"
- Track expenses and items by customer.
- Make expenses and items billable.
- Bill payment terms.
- Select Save.
You can continue to enter a billable expense and then convert it to an invoice. Refer to these articles for detailed steps: Enter a billable expense.
Please leave us a response if you have other questions or concerns.