Create shape out of multiple layers

[Harvey3369266777tg]

I'm trying to make a transparent flash effect on one of my frames. I've tried few different things such as merging the layers and colouring then, which has the parts that overlap be less transparent. I have no idea how to get the shape tool to fill in a specific area and it doesn't help that there doesn't seem to be anything on this topic from videos or other posts.

[n. tilcheff · Accepted solution]

When the shapes are on the same layer, use Modify > Break Apart to make them one raw shape. 

Depending on how they are nested, you may need to break apart multiple times until all becomes raw vector shape and merges together after a deselect.