Slider settings for online games?

[Andi]

Do the sliders (gameplay settings) also influence the online games? Or are the online games always at default settings?

If YES: is it always the host who defines the slider settings? Does the opponent have any chance to find out or check, what settings the host has chosen?

These questions are very important for us because we're planning a web league with german teams and don't know if we have to tweak the ratings or if we can use the sliders.

Greetings from Germany
Andi