Two displays, one fixed Dock position

Hi,

I have MacBook Pro with latest updates. On the top, I have an external screen, and on the bottom I have my MacBook screen. (See screenshots). I need and want to use the Mission Control "Displays have separate Spaces" and keep the Dock ALWAYS and only in the top external screen.

I am going crazy because the dock appears on the bottom (MacBook) screen. And this is not what I want.

How can i keep my current configuration but "force" the dock to be on the first screen always (not left, not right, but on the bottom of that screen" ?

Thank you!