Where to accept the Terms of Service for Google Play App Signing in the Play Store?

Issue

I'm desperately trying to opt out of Google Play App Signing. However the opt out button is gone until I accept the Terms of Service:

With the account owner I was searching for the Terms of Service, but we couldn't find it. Where is that accept button hidden in the Play Store?

Solution

Found it - there is a menu entry:

Answered By - mles