Unlike the left sidebar, the right sidebar provides access to both panels and actions.
Panels
Below is the list of panels available in the right sidebar. The Button column depicts the corresponding tool buttons from the right tool palette.
Button
Panel

Note values
Whole, Half, Quarter. Eighth. Sixteenth. etc.
Whole, Half, Quarter. Eighth. Sixteenth. etc.

Dots

Pitches

Accidentals

Percussion

Chords

Chromatic transposition

Augmentation

Subdivision

Diminution
Actions
Here is the list of action buttons of the right tool palette.
Button
Action

Toggle rest

Toggle tie

Toggle slur

Open the Scales tool