You can provide 2 different Agent commission statements depending on how much information you want them to see.
By default, the Agents can see their specific commission details on a transaction within their Agent portal by clicking the Commission Detail tab within a transaction.
If you want Agents to have full access to the commission disbursement so they can see all the details of the deal, go to Settings > Permissions and turn on the permissions Allow Agents to View Disbursements.
This will allow Agents to view and download the full disbursement.
Agents also have access to the Pipeline Report allowing them to see their deal pipeline, and actual and projected commissions for their deals.
If you want to give Agents access to the Commission Detail Report which shows them all credits and debits on the deal, basically a report version of the commission disbursement, you can turn that permission on: