Palm rejection is on by default. Only Apple Pencil/stylus input can draw; fingers and palm touches are blocked.
Palm rejection is on by default. When on, only Apple Pencil/stylus input can draw; fingers, palms, mouse, and trackpad input are blocked. Turn it off only if you want finger/mouse drawing. Notes save locally by day or by week.
Mobile tip: weekly view scrolls sideways so each day can keep its full time-block layout.