Hello there, rockyj1050.
The Expenses tab in the Bill window is only available in QuickBooks Desktop. To record the expense paid by your personal credit card, you'll need to create a Journal Entry. Here's how:
Just a heads up, you'll have to reach to your accountant to help you decide what is the best account to use.
To reimburse the 10%, you'll need to create a check, and then manually calculate the amount.
However, if you're using QuickBooks Online, you can refer to this article: How to pay for business expenses with personal funds.
I'm always right here if you have other concerns. Thank you.