Help Order

Syntax order <character> command
       order all command

ORDER orders one or all of your charmed followers (including pets)
to perform any command.  The command may have arguments.  You are
responsible for the actions of your followers, and others who attack
your followers will incur the same penalty as if they attacked you
directly.

Most charmed creatures lose their aggresive nature (while charmed).

If your charmed creature engages in combat, that will break the charm.