Hey @Jeonglim_Lee,If you are wanting to create an internal audience for
testing purposes and you can have that audience follow a few easy steps,
you can create profiles for them and then audiences from those profiles
to target in an activity (like an XT).The key is to set a profile
parameter using a trackEvent call. Here's how I've done this in the past
for setting up internal testing groups. I'll use your example of user_id
= noah0530.First is to get your trackEvent code ready. For Noah, you
wo...