Hello, add this in your fightclass like:
RunMacroText("/petattack");
RunMacroText("/cast Hunter's Mark(Rank 2)");
RunMacroText("/cast Berserking(Racial)");
RunMacroText("/cast Rapid Fire");
with spell settings "Not spell is lua script" > True and "Once per target" > True (and add distance condition)
But, you can also add all spells normally in your fightclass