How to Add Transitions in PowerPoint
Transitions are animations that you can use when advancing from one slide to the next during a presentation. They can be fun, but be careful not to overdo it with complicated transitions because they can become distracting.
To select multiple slides, hold down Ctrl as you select each slide.
The transition is applied to just the selected slide. To apply the transition to all slides in the presentation, click the Apply to All button on the Transitions tab.
To remove a transition, select None in the Slide Transitions gallery.
You can customize a transition effect to meet your needs, including adjusting its speed or duration and adding sound.
The options available here will change based on which transition you've applied.