Show mouseover windows right of the windows and not below

[Nhilrim]

Is your feature request related to a problem? Please describe.
When hover over the raidboss count of the main window, below the window a overview of all bosses of the instance is shown.

Describe the solution you'd like
I would like to have a option to chose where the popup shows up. I would like to have it right to the main window.

Describe alternatives you've considered
none

Additional context
See the popup below the main window, that I would like to have at the right of the main window.