Exclude specific boards from Top Kudoed Authors Leaderboard kudo counter

Currently, the leaderboard setings are:

• Top Kudoed Authors Leaderboard: Roles to Exclude
• Top Kudoed Posts Leaderboard: Roles to Exclude
• Top Kudos Givers Leaderboard: Roles to Exclude

I would like to add a custom rule if not existing that ignores kudos from a specific board (i.e. Announcement board) in computing the Top Kudoed Authors.