Select “Send Money” on the menu bar.
Click the "Send Money to Another Financial Institution" button under the "Send Money" section. If this is the first time you've clicked on the button, you'll need to read and accept the terms & conditions.
If you haven't already, you'll need to add an external account at another financial institution. Select "Add External Acount" on the right side of the screen. Step through each screen and fill out the required information to add your external account.
Once you've added an external account, you can send money to or transfer money from that account. Step through each field on this screen and fill out the required information. Click "Transfer" to complete the transaction.