mnemonics : how that work - make second machine become principal farmer and first become only plotting machine

[casa10]

hello,
I would like to know if i install chia on second computer and if i do import from mnemonics (24 words) what will happen after inserting the 24 words i had in my first time where i installed chia on my first computer?

1. Does i can farm with the second computer ?
2. Does i have the same wallet used ?
3. Can i create plot with the secondary machine too, taht is to say i will have the same private and public keys as my first machine to have same way to create plot ?
4. if i want my second machine becomes the main farmer and my first machine become only machine to plot, i suppose i must to unable upnp on the first machine ?

Thank you