The commissions on the simulator is currently $0 per trade and $0 per share. If you want to track your commissions, you can manually calculate them by multiplying the number of trades you executed by the commission cost. We usually recommend $4.50/trade as a commission rate.
We will have updates in the future regarding the ability to change the commission structure within the platform!
Still have questions? Please reach out to our Support Team, and we'd be happy to help.