Where do I assign an account to enter a bill?

Have you viewed the video tutorials:

Desktop PC program video tutorials

Can you please be a little more specific?

Thanks

Welcome to the thread, @assign an account to enter a bil.

Let me get the help you need when entering a Bill. 

The Expense at the far left that @Lexiesmemere is referring to is the Expense tab that you can see in the Bill page. For your visual reference, see below screenshot:

To learn more about how the Bill feature works in QuickBooks Desktop, you can consider checking below articles:

• Enter bills
• Void or delete a bill or bill payment check
• Pay bills in QuickBooks Desktop

I'm always here for you if you have any other questions, just leave a comment below. Have a great day!

@assign an account to enter a bil 

As additional option, explore this 3rd party app. You may:

* Pay a vendor invoice with a bank transfer or ACH transfer for FREE.
* Stretch your cash flow by creating up to a 45-day float by paying bills via a credit card, even if the vendor doesn’t accept credit cards.
* Vendors get paid with a physical check or with electronic bank transfers. You choose how you pay.
* 2-way sync with QuickBooks Online (data flows both ways).

https://melio.grsm.io/quickbooks

I have a check written in 2015  for $513 and assigned to customer A.  I am trying to split that check between 13 Customers.  I  split the check making making each customer had an account and amount assigned.  When I save the check after I split, QB says " you must assign an account".  I have accounts assigned already!  Help please.

Good Afternoon, @Accounting4050-2020. 

Thanks for joining in on this thread. To receive the best explanation and help on this issue, I recommend contacting our Customer Support Team. They'll be able to use more advanced tools to look further into your account to see why this is happening. Here's how to get in contact with them: 

1. Go to the Help menu. 
2. Pick QuickBooks Desktop Help. 
3. Click Contact Us. 
4. Type in your question and press Continue. 
5. Scroll down and choose to Get a Callback. 

I want to make sure that you're able to get this resolved as soon as possible. Let me know how it goes. Have a great day!