I appreciate you for clarifying your concern, @cormicanann.
I'd be delighted to share with you the steps to ensure you're able to link your Cheque transactions with your Bill.
Once you received the invoice from your supplier, you can create a Bill transaction to record it and link it with the cheque transactions.
To create the Bill:
To link the cheque transactions with the Bill:
You can refer to these articles for more detailed information about managing supplier-related transactions:
Also, if you want to know how much you're paying each supplier on a monthly basis, you can visit these articles:
Always feel free to swing by here in the Community if you have other questions. I'm just a few clicks away.