As far as I understand it is not possible to arrange this feature within TemplateToaster, am I right?
Correct. This is a content matter and is done from within WP.
I have not used Revolution slider, but I would gather that it works the same as the others in that you would simply put the shortcode for each slider where you want it on the page.
When you create a slider, generally, a shortcode is generated for each one with a unique ID, such as [slider-1], [slider-2], etc. You would then just enter these codes on the page where you want the slider to appear.