How do you change the currency symbol placement?

Thanks for sharing your thoughts with us, @rob-dobson-net-g. 

I know how this would be beneficial to your business. Currently, the option to change the placement of currency symbols in QuickBooks is unavailable.

You'd be glad to know that you can send feedback about the feature you wish to have with QuickBooks Online (QBO).

Here's how. 

1. Select the Gear icon at the top, then Feedback.
2. Enter your comments or product suggestions. Then select Next to submit feedback.

Your valuable feedback goes to our Product Development team to help improve your experience in QBO.

In case you want to change your home currency, you can refer to this article for the steps: How to change my base or home currency?

Let me know in your reply if there's anything else I can assist you with your account. I'm always around ready to help you. Stay safe!