This article explains How to use the new PreSonus Native Effects™ plug-ins from Studio One® that come with Notion 5
Step 1: Open or start a new score in Notion.
Step 2: Exit Score Setup and click on the mixer button to open the mixer.
Step 3: Press one of the insert buttons above the master track, buses, or individual instruments.
Step 4: Choose the Eq, Compressor, or Limiter from the list of VST plug-ins. Enjoy!