Is it possible, using Unity Ads, to tweak monetization settings via the Unity dashboard? For example, I plan on using Unity Analytics in combination with opt-in video ads to maximize their effectiveness (opt-in user engagement). If I wanted to tweak these parameters on the fly (for instance, how many video ads are shown per hour, daily video ad cap, etc), is it possible to modify these things without having to update the game (which is obviously slow and ineffective)?
No. Only code.