If you have been asked to pick up your pace it means that you have been identified as having fallen back of the group ahead of you. This does not mean you are being singled out. Many groups may be asked to close up gaps every day. A group can fall behind briefly for many reasons (a member of your group may have spent an extra couple of minutes searching for a lost ball, your group may have had to wait a few minutes for a maintenance cart to clear a landing area, the kiosk may have been making more hot dogs, etc.). Of more importance is a group that is simply taking too much time between shots and not being ready to play or are otherwise unaware they have fallen behind. In either case the Marshal will likely know the reason your group has fallen behind. It is his job to remind everyone that they must keep up with the group in front.