very simple, go into your library find one of the up arrow folders(they're in the top of every library then double click it as many times as it takes to get to the page with the download and P5 folders. at the bottom is a + and - click on the plus then browse in the window to your P4 runtime folder click on that and hit ok and your P4 library is added to the library list no need to load all your stuff you can access the P4 directory from your p5 library. you can also create new librarys wherever you want all accessable from the main library