Closed transaction totals
Show transaction summary in a Total Calculation line.
Add on All Opportunities a summary line calculating the totals of transactions and amounts.
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Our Transaction Summary totals all of your commissions! Check out this article to learn more: https://answers.kw.com/hc/en-us/articles/14737284903571-Generate-a-Transaction-Summary-for-an-Opportunity
Additionally, the Goals report in the Reports applet will show all of your transaction amount totals!