How to: Select a slide or slides in Slide Sorter view.
Solution:
Click on the slide or slides to select.
1) To move to Slide Sorter View, select the 'View' menu and select 'Slide Sorter'.
2) To select one slide, click on the desired slide. (The slide is highlighted.)
Selected slide
3) To select multiple slides:
a) Press and hold down SHIFT.
b) Click each slide to be selected. (Each slide is highlighted when it is selected.)
Selected slide
NOTE: Make sure to keep the SHIFT key pressed.
c) When all the desired slides have been selected, release the mouse button and the SHIFT key.
4) To deselect a slide or slides, click anywhere else on the screen.