You can do so by clicking the 'BANK DETAILS' button below. 

Then, tap on 'Add Another Bank' to add a new bank account.

If you already have another bank account added, you make it your primary account. Here's how to:

1) Tapping on the three dots next to the bank name
2) Tap on 'Make Primary'

Note: Your dividends and monthly/quarterly settlements will be redeemed to your primary bank account.