One file twice in Timeline: Node should only aply one Versio

if I have a file twice in my timeline (at different levels), how can i h prevent a node from always acting on both files at the same time? I want to apply the node only to the file in Video1 and the same file in Video2 should be handled with other nodes.

Greetings from Cologne (Germany)
Bernhard Klein

Do you have remote grading on?

[Peter Chamberlain]

Bernhard, look for 'local grades' in the help menu