Julien Duroure explains how to use the 'Propagate' tool to easily edit multiple keyframes at once.
In a previous post (What’s new in 2.74 & 2.75) , I talked about Propagate tool.
I had few questions from readers about this tool, so here are some details about it. This tool is useful during blocking step of animation. We are able to modify many keyframes in only one step.