The optional rules in Tasha's Cauldron of Everything for the Beast Master Ranger's "Primal Companion" state:
In combat, the beast acts during your turn. It can move and use its reaction on its own, but the only action it takes is the Dodge action, unless you take a bonus action on your turn to command it to take another action. That action can be one in its stat block or some other action.
This language implies that the companion can take actions like dash, disengage, or help that any creature can take, but are not listed in the Primal Companion's stat block. However, the level 7 ability states:
Beginning at 7th level, on any of your turns when your beast companion doesn’t attack, you can use a bonus action to command the beast to take the Dash, Disengage, or Help action on its turn.
This implies that the companion couldn't take those actions before level 7. Is there a list somewhere of what actions a Primal Companion can be commanded to take?