I would like to request for an option for a condition parameter that would be able to determine the dynamic number of days prior to the closing date of a deal. 

There is a brokerage that uses the Aggregate Sales Entity value of 365 days prior to the closing date of a deal. The Aggregate Sales Entity value is the one that determines the split that's going to be applied for the agent on that deal. 

So if a deal has a closing date of March 30, 2021, they would pull up the agent's Aggregate Sales Entity value from March 30, 2020 - March 30, 2021, and that amount would be the determining factor for the split being applied to the agent. If the agent does a second deal that has a closing date of April 10, 2021. They would pull up the agent's Aggregate Sales Entity value from April 10, 2020 - April 10, 2021.