After logging in the app, tab the "Transfer" widget on the home-screen:
In the next page, enter the relevant transfer details accordingly.
Tab on "Select Source Account” and choose the account from which you wish to transfer funds from.
By selecting "Select Destination Account", select the account you want the funds transferred to. Below each of these selections, boxes will display the real-time balance of each of the accounts.
Enter the amount you wish to transfer in the "Enter Transfer Amount" field, then tab the "Transfer Funds" button.
This process is instant, and the funds will be transferred immediately.