How to update the parts of an assembly

I have an assembly of which I am frequently making small adaptations to the parts that are present in the assembly.

I don't really like editing the parts while in the assembly view as your tree becomes too big. So I have a setup with two screens: One showing the assembly and one showing the particular part I am working on. I would like the assembly to update (so screen no 2) while I am working on a part that is present in the assembly (screen no 1).

Currently the only way that I can find to update the parts in the assembly is by saving the assembly, closing it and opening it again. Is there a button somewhere to update the parts?

SolidworksModeling And Assemblies