You can view your team members' transactions in the "Transactions" page in the cardholder app. By default this page shows only your personal transactions. You can switch to a view showing all transactions, including those of your team members, by clicking the "Show team transactions" toggle. If you want to see the transactions made by all members of a specific team, you can filter for that team with the "Team" filter.
You can manage your team members' transactions similarly to how you manage your personal transactions. You can click on a specific transaction, view, download and delete receipts, and edit the various transaction settings in the transaction detail screen.