Just browsing and happened to see this... don’t know how old it is. From the video clip above though, it looks like he has his play call settings( or whatever it’s called) set to slim. I don’t think you can change it in game... but change it to enhanced , you can do it pre game or through your global settings so enhanced will be your default option. Try that, and then when you are in the play call screen, select your formation, and when you are on the screen with actual plays press L2 ( not sure what corresponding button is for Xbox ) and you should be able to set your audibles. I’m like 94% sure this is the problem lol hope it helps....
I wasn't able to do it when it's under "Suggested plays." Make sure you back all the way out to where you can navigate to formations.
Any way you can record a clip and link it here so we can see what you're doing in game?