Automatic preset multilogin for any website

I know the wonderful script for Chrome : fbquicklogin

I would like something similar configurable for any website.

Or

A script to login to any website configurable.

Best Regards

How can we open all 10 profiles in multilogin at the same time?
Using 10 different browser windows on incognito, or 10 different guest sign in 1 browser & open each with differentultiple window?
Need a sol asap. Any advice is welcome