will do, will make, will hurt, will have (someone do something)
Je lui ferai réparer cette montre.
I'll have him repair this watch.
Dès que le résultat sera rendu public, je te le ferai savoir.
As soon as the result is made public, I’ll let you know.
Tu ne sentiras rien et je ne te ferai pas payer, mais prête-moi un peu d'argent.
You won’t feel a thing, and I won’t charge you, but lend me some money.
— Mother (2009)
S'il doit venir, je vous le ferai savoir immédiatement.
If he is to come, I will let you know immediately.