Task: I would like add first photo from google photos to the presentation third slide through office presentation app
Steps:
click on the plus icon at the bottom of the screen to add new slide 
click o n the burger menu at the lower left corner of the screen to insert an image 
click on insert option ( top fifth option) on pop up window at the lower left side of the page 
click on photo album option ( last second) on pop up window at the center of the screen
click on ADD button at center of the screen to insert an image 
choose images option at top of the screen 
choose first image at the screen to insert it in presentation slide 
click on right tick arrow at upper right corner of the screen