You can save your favourite pens, highlighters and erasers in Notability.
When you have chosen your pen/highlighter/eraser, tap on the Favourites icon at the bottom of your popup window to add it to your favourites.
- Tap the bar on the beginning end of the favourites toolbar to move it around the page.
- Tap the X icon to tuck it away.
- Tap the star icon (bottom left corner) to bring it up.
- Tap on the tool you want to remove to bring up the customisation popup window.
- At the bottom of that window, tap Remove.
Notability limits you to 12 favourite tools on your toolbar. After that you can’t add more, you can only adjust the ones already there.