Minecraft Bedrock Teams command

We need the teams command on bedrock. A way to add players and mobs to teams. I thought of using this command on bedrock but it doesnt exist. Its would be a way to, example: add players and mobs to a team so they dont attack eachother and a way for mobs to fight eachother. 

This way you could create arenas or "classes" like a summoner who uses mobs against players or other mobs.