Hello again CherieT,
I was in the process of responding to this question on the other thread. Seeing as you've rephrased and reposted it, I figured that I'd give you the full response here.
Deposit could mean a few things in QuickBooks Online, but based on what you mentioned in the previous thread about an Amex transaction, it sounds like you may be using QuickBooks Payments. It's a great service for accepting credit card payments from your customers through the program. By design, the service allows you to accept Canadian transactions for Mastercard, Visa, Discover card, and Apple Pay. If you were somehow able to process an Amex card, it was likely just a glitch in the system that allowed it to go through.
QuickBooks will automatically create both the deposit and the fee transaction for you, which you would then view in the Bank Deposit window through the Plus (+) icon or through the Deposit tab in the Sales section of the program. If you're not seeing it however, you can manually create the expense yourself to ensure that it's calculated in the books. An accountant can help you with determining which account you should use if you need to create the expense yourself. You can even invite an accountant as a user to your QuickBooks Online, which will allow them to have a closer look at what you're entering. I'll include a link below about how to invite an accountant.
To make sure we're on the same page with what we're talking about, I recommend calling the QuickBooks Payments team if it is a Payments service transaction or the QuickBooks Online support team if it's not Payments related. I'll include a few links for you below about Payments that you can reference as well.
To get in touch, you can dial 1-833-317-2226 and follow the prompts to reach QuickBooks Payments (it may also be called Merchant Services) or QuickBooks Online support. The Payments team is available from Monday to Friday between 8 a.m. and 8 p.m. ET while QuickBooks Online agents can be reached from Monday to Friday between 9 a.m. and 8 p.m. ET or Saturday from 9 a.m. to 6 p.m. ET.
I hope that helps!