Payment Selection - Default period to post

In Accounts Payable -> Payment Selection, how do I get the period to post to default to the current period (i.e. the latest period currently open)? Right now, it is defaulting to the earliest period currently open, so unless the user manually changes it, the checks will be posted to the wrong period. However, we have another company in Solomon that defaults to the current period. So there must be some way of changing the default. Thanks, -Nathan