You can do this from an ATM machine by choising Transfer after you enter your PIN, or from digital (on-line) banking by selecting from the Menu (Transactions>Funds Transfer>From Main Share>To Classic Checking)
You can do it on shuttle talk
You may also do it with the free app on the app store and play store. Just tap on the two vertical lines on the right-hand side of the account you want to transfer FROM then tap "quick transfer" then tap on the drop-down menu and select the account you want to transfer it TO then type in the amount you want to transfer then click "Transfer Funds". After you will get a pop up saying "Transaction Processed".
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