Thanks alot for your guide on yt. I got a paladin & shaman grp because of your pvp vids :-)
Finally i got my hivemind too, but i found two problems.
First problem was the item behind the rainbow bars. It does damage 9560 damage (max hp at char) and 69599 damage over death. You have to do 9560 + 69599 = 79159 ... this is the working code.
After that use /target catname for the toon infront of the cat. u have only hit the button for "interact with target" if window is active.
It helps me alot to do like this. Write it down. My son read this load so i can click easier:

2 - 5
2 - 5
1 - 2 - 5
1 - 2 - 5
1 - 2 - 4 - 5
1 - 2 - 4 - 5
1 - 2 - 4 - 5
1 - 2 - 3 - 4 - 5

Second problem was on some websites they explain the jump rotation. i found some sites (german language) they got a failure after 3 toon go out of object an begun left side again. some websites explain wrong after that action ... use this guide for jumping https://warcraft-secrets.com/guides/the-hivemind