Hello there, calicoellie.
It depends on which one is more convenient for you, if it's sending monthly invoice dues or an invoice for signs, biz cards, etc and a statement for monthly dues.
On the other note, If you wish to link it to a vendor, you can add the customer's name on the bills and expenses. If it's billable, you can mark it as billable. When you enter bills, there's a section to enter customer name and a check mark box for billable. Select the customer name and mark it billable.
For additional help, feel free to reach out to our QuickBooks Desktop Support. They'll be able to guide you through the whole process.
Please know that I'm always here to help if you have any other QuickBooks concerns, just add a post/comment below.