After some research and hit and miss app I will answer second part of my question myself:
How to perform ap switching on Max2?
Use app called Ragdu that allows for fast switching between preselected apps. It's a simple app that creates a small circle, which when clicked, allows to switch between various apps.
I think this is important feature when you work across multiple documents, browsers, text editors etc - this is how students study
Now I just need to work out how to have notes from multiple sources in the same document (not per each document)...