Wallet on two computers

Hello again guys. First, i want to thanks to all that quickly replyed to my first topic, and helped me a lot. THANK YOU.
And now on the this topic.
Is it possible to open one wallet on two computers? (They are not in network, but in same router)
I have two 6TB WD Elements External Drives and want to put them on two comps for fast plotting.
Thanks in advance.
And something else. I saw lots of chia videos, but no one is about how to join pool mining/farming
if is avaiable yet. Please if someone have video for how to join the pool farming to share it. Thanks again. Best regards. Ven.