
Add grace and independent notes in the Score Editor in Logic Pro for Mac
When Enable Complete Features is selected in Logic Pro > Settings > Advanced, you can add grace notes and other independent notes to a score. Independent notes are notes that aren’t included in the automatic rhythmic (and graphic) display calculation of a measure, but are still played back via MIDI.

Independent: Displayed at their original length, as long as they are binary or dotted note values that can be displayed as a single (not tied) note. After insertion, you can change the stem direction, enharmonic interpretation, accidental distance, and note head, using the Note Attributes functions. For more information, see Overview of note attributes.
Independent grace: Always displayed as miniature eighth notes, with a slash across the stem, and a tie. The tie direction, stem direction, enharmonic interpretation, accidental distance, and note head can be changed.
Both types of independent notes appear only as single notes, without beams.
Important: In most situations, you will need to create additional space between the grace note and the note it’s associated with. The best way to do this is with the Layout tool, which can be used to move the main note away from the grace note. For information, see Position items graphically in the Score Editor.
Tip: If you want to create beamed grace notes, try using a polyphonic staff style with no rests displayed for the second voice. Assign the grace notes to the second voice, and resize them with the Resize tool. See Add and delete staffs or voices in the Staff Style window for more information on staff styles.