At any time, you can deposit crypto into your Payonix account. You might want to do that to make payments with your Payonix account or simply to hold crypto there.
To do that, go to the home page of the dashboard and hit the deposit button. On the deposit modal, you can select a token and a network and send the amount you want to the address that is displayed.
Otherwise, you can also select an amount, connect a wallet and transfer the selected amount to your account (you will have to confirm the transaction in your wallet).