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