Adding custom instructions to your templates is a great way to easily tweak the notes Copilot generates to your liking. You can for example:
makes notes more concise or more verbose
remove periods at the end of sentences
use sentence fragments
How to use
Use the Magic edit feature to find the custom instructions that will produce your desired note.
When you're happy with the instructions, copy them.
Then, go to "Settings" > "Note", click on "Note template advanced settings", check the "add custom instructions" checkbox, and finally paste your instructions in the text area.
The next time you generate a note with the template for which you defined default instructions, your instructions will be taken into account.