Commission is applied off of all payments received. Commissions are a percentage. So, if the trial is a free trial, then there is no commission. However, if the trial is a small amount (like $1 trial for 3 days), then the commission is applied as a percentage of the amount of the trial payment. So, in our $1 trial example, if the commission is 20%, then the commission amount from the trial would be $0.20.
You can modify new downline notification, new commission notification without any issues. You should not turn test payments on except if you are doing a test payment. While test payments are on real payments will not work and vice versa.
When a payment is made, an Member receives a commission set by the admin. They can see the amounts earned in their members area.
The admin is able to see their balance and has reports for making payouts.
There is also the ability to export csv files for mass payment through Payza and PayPal.