Group Changes to Slide Properties

Hi!  I know I saw this and can't seem to find it again.  I am importing PPTs to Storyline 360 and want to do a group changes to those slide.  I want to change them to "custom defaults."  I selected 5 slides and removed prev, next, etc and used custom defaults.  I thought it worked, but it didn't. 

I have more PPTs to do this with.  Appreciate any help you can give me.

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