aligning the pages of my manusript

i am having a brainfart/can’t find in the tutorial videos how to align my pages so they alternate (align to the left then right) so when my manuscript is printed the text is sufficiently to either side so the words are lost in the middle where it is bound.
i am googling the crap out of it but i can’t recall the specific name to help me filter the search better

HELP

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Moderator Note: I’ve moved your post to technical support, from the Using Scrivener area (which is for posting tips and sharing how you use Scrivener).