Option to write method of payment (ACH, Wire Transfer, Cash) on invoices

Hi,

I was wondering if you guys could add an option to write down the method of payment received when brokers pay our invoices. Just an easy paid by ACH/Cash/Wire Transfer type of thing.

I think I saw someone write about the necessity to add notes on the payments section too, which would also help, as its a pretty simple method to track and make sure all payments are correct.

Also on the side,  I would like an option to select all units when creating an Expense. I want to create one for Insurance so that I select multiple units that are being covered, so that it shows on my Unit Operating Income report.

Thanks