To add an external account you'll need to head to the 'Payments' page in your host area. You can add a bank account to your account using any of the supported currencies mentioned here: Supported Settlement Currencies.
As an example, if your account is located in the USA, you can only add bank accounts located in the USA with a currency of USD. Accounts in the EEA can add a range of accounts and currencies.
Alternative Payout Methods
If you are currently a resident of a country not supported by Stripe we are able to offer payouts direct to a connected PayPal account. If you don't have a PayPal account you can create one by following this link. Once created, enter your PayPal email address into the input field and save your changes. Please make sure you have entered your email address correctly as mistakes cannot be rectified.