Start an Integromat scenario by clicking on a button

Hello all !
I hope all’s good for you !

On my new project, I need to strat an integromat scenario by clicking on a button,
BUT
I don’t know if I can link a webhook on a button, or if I need a webhook but an API call.

For more details, this button will call an automation, with I will take values on Airtable and send a PDF to the one who clicking on the button.
But today, I’ve make the render of the pdf, but by clicking on an Airtable button, it’s not what i want.

Thx a lot for your time.