A bevel is an angled cut which is perpendicular to the wider face of the board but at an angle across the narrower edge of the board.
A miter is an angled cut which is perpendicular to the narrower edge of the board but at an angle across the wider face of the board.
To set your saw to a bevel, first cut a piece of scrap to the desired angle, and then use the scrap to set the bevel. If you don't have a way to determine the initial angle (in this case 10 degrees) draw a rectangle that is 2" x 11-3/8" and connect the corners.
When cutting dowels or other small stock with a power miter saw, place a piece of scrap behind the stock being cut to support and "catch" the cut-off piece.