Yes – You can use the Payment Cart feature to do this. You can add payments from multiple accounts or multiple payments from one account. All you need to do is click the button “Add to Cart” on the payment page.
This will then be reflected in the upper righthand corner showing that there is an item(s) in the cart. At this point you can take a payment on everything that is in your cart.
Please Note: Once you have added a payment to the cart you will be unable to set up a Simplee PayPlan. You will need to first Empty the cart and then create the Plan.