You can add your bank account details to your agency profile. They will then appear in the payment advice section at the bottom of every invoice. Something to keep in mind is that this won't show in the preview of the invoice, it will only appear once you've generated the PDF. To add in your bank details:
- Go to Settings > Agency & Branding > Agency Profile
- Click the General Details tab
- Scroll to the bottom and enter your bank details into the 'billing deposit details' field
- Click Save Changes in the top overlay