How to Save a Custom Gametype in Halo 4

I’m probably being a complete moron, and the answer in all likelihood is right in front of my face, but I can’t for the life of me figure out how to save a new gametype after I’ve adjusted the game options.

Help please!

Edit: UGH ok I FINALLY figured it out. You press Y on the selected gametype.

EVEN THOUGH THERE’S ZERO INDICATION THAT PRESSING Y WOULD DO ANYTHING WHATSOEVER!!

This UI looks mighty slick… but there’s some pretty pertinent information missing. Needs work.

i am still lost on how to do it. i have been pressing Y on everything and nothing is popping up, do you pressing it on “Game Options” or under “Game Type”?
please help.

When you are at “game options” and have edited/selected the game stuff, just press “Y” then it will ask you to save

I somehow figured it out after hopelessly clicking things and pressing random buttons.

I swear it wasn’t there before but when I look now under the Customize Game menu I can barely see at the bottom left of the screen “(Y) File Options.”

thank you so much, it doesn’t tell you what button to press any more