Transfering between your accounts is easy:
1. Simply log in and select the account you wish to make the transfer from
2. Select 'Make a transfer'
3. Choose what account you want to make the transfer too
4. Enter the amount you wish to transfer
5. Select to 'send now' or 'send later'
6. Click 'Make transfer' on iPhone or 'Next' on Android - You will then be shown a confirmation screen