[Feature Request] Option to load workflow alongside existing one - without replacing the first one

A lot of times, I would like a way to combine two workflows, which requires loading them both and adjusting them into a single workflow. Currently when one workflow is loaded, loading another one will replace the first, without the option to load them into a single workspace.
The workaround now is to use 2 separate tabs to juggle between 2 workflows, to copy-paste between them. But it would be much more convenient to have an option to add workflow on load, and not just replace the existing one.