Instead of creating a new payable from scratch, you can copy an existing one that's similar to the one you want to create. After you make the copy, you can edit the details as needed.

For example, you hire a contractor to redo the sink in one of your units. Then, a few months later, you hire him again to do the sink on another unit. Because the invoices are similar, you can copy the original payable and make a few edits to it -- a new invoice number and a different amount.

Go to Accounting > Accounts Payable > Payables.

Locate the payable you want to copy and open it.

Click the Copy button in the upper right.

The New Payable screen appears.

The Invoice Date defaults to today's date; the Post Month defaults to the current operating month.

The Invoice # is not copied over -- you need to enter a new one.

The detail section is a copy of the original payable, and you can edit the details as needed.

Click Save when you are done.

For regular monthly bills, you can use the recurring payable feature.