The "ORDER NOW" button creates a new subscription order (or an Override) that will take the place of your automatic subscription order for the current month. For example, if you normally have a monthly subscription order ship on day 20 of each month, you may go online and place an "ORDER NOW" order (or an Override) on day 12 with different products, a different payment type, and a different shipping address, if you so desire. You will receive the same product points just like you would normally, and your monthly shipment will simply be held until the next month.
If you would like to send out another subscription order in that same month, you can use the ORDER NOW (Override) button as many times as you would like. There are no limits to the number of orders placed per month.