After depositing USDC native on Arbitrum to your 'unused funds', you'll see that it reflects your entire top-up amount. You'll now be able to deposit from your 'unused funds' to your Savings account.
Below is a full guide on how move your funds to savings.
Step 1: Click 'Savings'.
Step 2: Select 'Deposit'.
Step 3: Enter how much of your unused funds you want to allocate to savings.
And that's it! Enjoy up to 5.09% APR, powered by Dinari.