Yes! And fairly easy too. You need to open the multiclip sequence (the "nest" - the one with the two tracks of video) that the multicam sequence was made from. You do this by right-clicking on it and selecting "open in timeline". Then you can just click the angle you want to adjust, apply the effect, and close the sequence nest. The effect automatically appears in the multicam sequence.
This is true of any change in the sequence nest. You can do things like re-frame an entire camera angle, apply a color correction, even do audio effects. It's very powerful and slightly dangerous if you don't know what you're doing! The best news is it's very easy to un-do any mistakes - just remember to re-open the nest