Using 60 fps or 120 fps on a lower fps timeline.

Hi, I was wondering if anyone could clarify if the following is possible, how to do it or if there is an alternative solution.

Let's say you film most of your footage at 24fps for a project and filmed some additional B Roll footage at 60fps and 120fps for slow motion and super slow motion. What do you do if you also happen to want to use some of that 60/120fps footage at normal speed looking like 24fps without any horrible video consequences?

Using davinci resolve.
Thanks