You've come to the right place, brownhound.

I know a quick and easy way to add the subtotal line on your estimate, so let me lend you a hand in taking care of this.

Let me walk you through the steps on how to add it:

1. Click the Plus (+) icon.
2. Select Estimate.
3. Enter all the necessary details on the estimate.
4. Click the Add Subtotal button.
5. Select Save and close.

That should do it. With these resources, I'm confident you'll be all set and ready to go with your estimates.

I hope this response finds you with a smile. Keep in touch if there's anything else I can do for you. I always have your back and am always happy to help. Have a great day!