Kpop music shows

Hi all,

I will be in Seoul during 15-22 February. I was hoping if someone could explain how music shows work? IVE will be making a comeback on 3 February and I was hoping to catch them live if possible. If not, it would be great to catch them while they are leaving the building after the shows (I’ve seen some tiktok’s of people doing this).

Greatly appreciate if anyone could enlighten me on this!