Depending on the situation, both methods can be very useful. Here are steps for both methods
Method 1 - Start from Scratch
Go to the Home Panel and scroll until you see the streams section. Then click on the plus button to create a new note series
You will then be prompted to create a series as usual and adding a name and description (optional). There is just an extra step to add the people who you would like to share the note series with.
Method 2 - Convert an Existing Note into a Shared Series
To turn a note into a shared note series, first find the note on the Home Panel under Streams.
Once that note is selected, click on the Share button in the upper right hand corner of the note.
Add the other users to the note.
Then you should be all good to go! View the note in the Others section of the Home Panel