Hole competitions (skillshots) display challenge messages on specific holes (e.g., "Closest to the Pin on Hole 7").
Scoring Features upgrade ($10/event) or Scoring subscription
The message displays to golfers on that hole during play.
You will still proximity markers out on the course so golfers can see if their shot bested the current leader. If so, they'll move the marker and add their name to the hole competition field on the PlayThru scorecard.