Thank you for keeping in touch with us here in the Community, @sgobeauty.
We're unable to enter positive minus negative amounts when creating journal entries in your QuickBooks Online account.
Meanwhile, you may visit this site to get you in the loop about the latest QuickBooks release: QuickBooks Latest Updates.
You may also read these handy articles to learn more journal entries works in QuickBooks Online. This way, you'll know more tips on how to manage journal entries effectively and efficiently:
Check out also this awesome help article if you have other QuickBooks concerns, such as running your reports, setting up payments and online banking, managing employees and payroll taxes, etc. to keep your business running smoothly.
Fill me in if you have more questions. I'll be around to help. Take care and have a nice day!