To number the slides of a PowerPoint document, choose View / Header and Footer, which will bring up the following dialog box:

1
To number the slides of a PowerPoint document,
choose View / Header and Footer, which will bring
up the following dialog box
Check the slide number box
Then choose Apply to all. Now page numbers will
be automatically generated at the bottom of each
slide.
2
To add comment to a slide of a PowerPoint
document, choose Insert / comment, which will
bring up the following dialog box
Type your comment in the yellow area, you may
delete or leave your name there.
Press Enter when done. Comment will be added to
the current slide.
3
To change the color scheme of a slide in a
PowerPoint document, choose Format / Slide Color
Scheme, which will bring up the following dialog
box
Click on custom, and choose the color you like .
Press apply to use this color scheme on the
current slide, or apply to all to use this color
scheme on all slides.