Add slides

  1. Select the slide you want your new slide to follow.

  2. Select Home > New Slide.

  3. Select a layout.

  4. Select the text box and type.

Delete slides

  1. For a single slide: Right-click and select Delete Slide.

  2. For multiple slides: Hold Ctrl and select the slides. Then right-click and select Delete Slide.

  3. For a sequence of slides: Hold Shift and select the sequence. Then right-click and select Delete Slide.



Source: Microsoft