I believe Radde Mazalim is the money we donate to compensate for anything we took from others without their permission.

My questions are:
1) Can I donate on behalf of my family members, with the niyyah of compensating from their behalf, for anything they happen to take from others by mistake, due to lack of knowledge?

2) Can we donate the Radde Mazalim money to Non-Muslims as well?

3) Is there a calculation required, or we can donate as much as, and, as many times as we want, just to have nothing left on our shoulders?

1. Yes there nothing wrong to donate on behalf of your family members. It’s allowed but make sure to inform them.

2. It’s better to donate to Muslims and lovers of Ahlul bait

3. There is not set calculation unless in a case one knows what he took from others