How do you create and manage multiple facebook accounts? (for likes)

Hello everyone!

I've seen that many people on fiverr offer these services and have bought them many times, but...
I am looking for Spanish accounts instead of other languages and I want to add the likes gradually. The other thing I want is a little activity after the likes are added to a page.
So I was wondering how is this done, is there a script or scripts that do this?
If I have to create the accounts one by one that's ok. I don't want to log in to each one to like a page... no time for that.

Any help on this?

Thank you so much