Round up donations

Hello, 

I was wondering if/how people are processing round up donations? For example, a customer has paid £27.75 for tickets - and we want to suggest they round up to £30. 

Or a customer has paid £84 and we want suggest they round up to £100.
We are looking at doing it through the BO via Quicksale but wondering if I could take a peek, get some feedback at how people do it online. 
Thanks
Kelly
Parents Reply Children
No Data