Task: I want to add first photo from google photos on the presentation's second slide using the power point app
Steps:
click on the plus icon ( add on) at the lower right corner of the screen to add new slide 
click on the insert icon ( pen image ) at the top of the screen to add an image 
click on home button at the  lower left corner of the screen to insert an image 
click on Insert button ( top second option ) on pop up window at left corner of the screen 
choose pictures ( last second option) from pop up window at bottom of the screen 
choose photos ( first option ) on pop up window at screen 
choose first image from gallery at the top of the screen to insert an image in slide 
choose first image from gallery at the top of the screen to insert an image in slide 
choose first image from gallery at the top of the screen to insert an image in slide 
choose first image from gallery at the top of the screen to insert an image in slide