Receiving payments: how to to add a test payment account as an admin?

I’m running Sharetribe locally. I’ve enabled Stripe in my admin account, added the test keys and created an offer/service. When applying to it as a client I got a warning:

Please contact the author by pressing the ‘Contact’ button below. They need to update their payment details to receive payments.

At admin settings: /settings/payments the real bank account. number is required.

How to get around that?

My goal is to test Stripe payments

Please check test bank numbers to use from https://stripe.com/docs/connect/testing#account-numbers