Make a note of the current raw and cooked balances, then press the blue Add button at the bottom-right corner of the window. It should load the TransactionModal component. Populate the inputs, make a note of the Type, Raw Amount, and Cooked Amount you entered, then press the Save button.

The balances should have updated to reflect the new amounts. If you picked Withdrawal for the Type, the balances should decrease, otherwise, they increase (for Deposit) as shown in the following screenshot: