Hustling out to positions

[njdevs00cup]

I was working a middle school game by myself. The home teams gives up 7 runs in the first inning, mostly on errors and the coach is not happy. At the conclusion of the inning, the visiting catcher and pitcher take the field and begin to warm up. The rest of the players (visitors) loaf onto the field. I told the team to "hustle out!" The home coach gets ticked off that the kids (visitors) didn't run onto the field and lets me know about it. The pitcher throws his 8th pitch and we begin w/o delay. This continued throughout the game. Where does my responsibility end and the visiting coaches begin.