How do I set up Intellij for bytecode instrumentation?

This forum doesn't seem to allow posting code, so I'll just link to stackoverflow:

https://stackoverflow.com/questions/46445908/how-do-i-set-up-intellij-jar-manifests-for-bytecode-instrumentation

In a nutshell, I'm trying to set up Intellij such that I can use it for bytecode instrumentation. This being the first time I have to work with instrumentation, I have no idea how and would appreciate some help in getting it to work.