By default, part marks are placed at the end point of the part. You can change this by adjusting the predefined location settings for beam, bracing and column marks.

1. On the File menu, click Settings > Options and go to the Orientation marks settings.
2. In Mark location: Preferred location for beams and bracings, select Left or Right to place the mark to the left or right end of the part.
3. In Mark location: Mark always to center of column in GA drawings, select Yes to place part marks in the center of columns in plan views, or No to place part marks on the same flange in GA drawings and assembly drawings.
4. Click OK.