We just added two new optional property options for managers to our system:
1. Block other payment types - This allows you to only allow a "Rent Payment" be submitted before other payment types can be used. For example, a renter wouldn't be able to submit a Utility Payment or Other payment without first submitting a Rent Payment transaction for that Month/Year
2. Require Past Month - This option doesn't allow future Month/Year options to be selected for a payment unless the prior month was paid, such as not allowing the renter to select 04/2013 as the Month/Year if they didn't pay March yet.
Please let us know if you have any questions. Thank you.