Durations

The Default Transition Type and Duration are set in Project Options / Transitions

The Default Slide Duration is set in Project Options / Main

To change the Transition Type and Duration for a slide or multiple slides go to Slide Options / Transition

The Transition Duration can also be changed by entering a value directly into the box in the Slide(s)

To change the Slide Duration for a slide or multiple slides go to Slide Options / Main

The Slide Duration can also be changed by entering a value directly into the box in the Slide(s)

To select Contiguous Multiple Slides click on the first slide and Shift+Click on the last slide

To select Non-Contiguous Multiple Slides click on the first slide and Ctrl+Click on the other slides

For more information on Slide Duration see Slide Duration