I know how to quantify the impact of a Risk on activities. For example, by saying more likely impact would be 10d then it will add 10d to the respective activity.
What about opportunities? When I assign an opportunity to a task and then tried to fill the quantified section of the risk register it only accepts positive number of days (example 10d) which work similar to risk (no opportunities) meaning it adds 10d to the original duration. This is not what opportunity is. Opportunity is to reduce the duration by some amount (example 10d). It doesn't accept negative numbers, so how do you suggest to use the risk register to implement it?