Stems
        
        
            - Click 
 the Simple Entry tool  , and select a note. (You can Option-click to select a particular note). , and select a note. (You can Option-click to select a particular note).
- Press 
 the L key to freeze the stem in the opposite direction. When a 
 stem is “frozen” up or down, it’s no longer free to change directions 
 if it gets transposed. To restore a stem to its “floating” status, position 
 the insertion bar on the note and press option-L.