Question

how can a picture be added to every slide of a presentation in just one go?​

Answer 1

Answer:

In the insert optio you could add picture video etc etc

Answer 2

Apply an image to all slides

1. On the View tab, click Slide Master.
2. In the Slide Master view, select the slide master at the top of the thumbnail pane on the left.
3. On the Slide Master tab of the Ribbon, click Background Styles.
4. Click Format Background.
5. To insert a picture from your computer, click Picture or texture fill.