There are two probably weightings in QuarterOne - Stage probability and Forecast Weighting:
Stage Probability is the probability weighting as defined in your CRM system. In HubSpot this is set for each pipeline stage when creating the sales pipeline stages.
Forecast Weighting is the weighting defined in QuarterOne. Initially, on the first import of an opportunity this is set as the same percentage as the Stage Probability. However, beyond this, users can adjust this however they wish for every opportunity so they are no longer tied to CRM Stage Probability.
A unique Forecast Weighting can be set for every opportunity, irrespective of the opportunity stage. To change the Forecast Weighting:
Weighted Amounts can be viewed for every month of the year. To view or export Weighted Amounts: