In some markets, there is a nice commission feature called a pro-fee. This means the agent is earning some percentage of rent and a "procurement" fee for bringing the tenant. The most common pro-fee we see is 100% of the first months rent. Here's an example of how to set that up in CommissionTrac:
You can see that there is a 1 month period where the commission percentage is 100%
Then there are 11 months after that with the same rent / month but the commission percentage is 5%
The first period is separately recorded because the commission percentage is 100% for the pro-fee.