@MSA_2021

Hi

Assuming you mean you want a blank screen for a short period between two slides, you can either:

1. In Timeline mode - leave an empty gap between the 2 slides, Photostory will complain about a gap when you come to export the slideshow, however this can be ignored
   
   or
    
2. insert a black image between 2 slides - a black, and other colour images, are available under Templates tab, Decoration, Test images. When you add it the image to the timeline you will get a pop-up, select Ignore to insert as a separate object.

HTH

John EB