Atteler belong to the 1st
group. Atteler is a common french verb.
Atteler is conjugated the same way that verbs that end in : -eler
Atteler is conjugated with auxiliary avoir
Atteler verb is
direct transitive, intransitive.
French verb atteler can be conjugated in the reflexive form: S'atteler
verb is a direct transitive verb, so passive voice can be used.