For quick access to pen settings, tap the floating pen indicator to open the toolbar, then tap 

You can move the pen indicator by dragging it.
To temporarily remove the indicator, drag it to 
To remove the indicator entirely, disable it at Settings > Pen > Preferences > Pen indicator.
If you want the indicator but don't see it when you remove the pen, enable it at Settings > Pen > Preferences > Pen indicator.
Pin up to four tools or apps to the pen toolbar.

To add tools or apps to pen toolbar:

To pin a note in the Notes app to the pen toolbar, open a note you want to pin, go to 

On the pen toolbar, tap 
Locked device: Set which note app opens when removing the pen. On the pen toolbar, tap 
Unlocked device: To show the toolbar when removing the pen, tap 
To prevent losing your pen, turn on these settings:
Adjust settings: