To move from activity to activity - Up/Down Arrow

To move from field to field - Left/Right Arrow

To move between phases - Ctrl+Up/Down Arrow

To select task - Space

To create a child activity - Tab Button

To delete a phase or connection - Delete Button

To create new phase activity - Ctrl+P

To undo the previous action - Ctrl+Z

To save the schedule - Ctrl+S

To expand/collapse all button - Shift+Enter