So you know these surveys that have the "pick your gender" for no reason? You don't have to imagine all options that's not female or male, but let's pretend there is.
Without reading the options, a pangender person would press "Select All" because they don't see a difference between their genders or the difference between their genders confuse them.
But since an omnigender person experiences their genders singly and see a difference between their genders, they need to make sure they know what they just answered. they can do this instead:
• An omnigender would read each gender identity before selecting all or almost all of them.
• An omnigender would pick the gender they feel like today. (personally I experience my omnigender identity in a genderfluid way)