Specify window sizes/positions

I use `kickoff` with `hyprland` and `waybar` as my bar. `kickoff` clearly doesn't take the whole screen in this case, and the difference between bar and other parts of screen is noticable.
As my default runner, I use `tofi` with some light theming to control window size, position, borders, etc, so it runs in the middle of my screen in a small window.
Is the same dehavior for `kickoff` possible?