Office & Home is designed for very busy people, who, after leaving their office, have to do extra work at home, and want to access files on their office computers.
Typically, your office PC has a local network IP address, instead of a Internet IP address. On the other hand, your home PC usually has an Internet IP address. OH links these two PCs with ease. And certainly, OH can also link two Internet-IP-addressed PCs.
OH has two seperate programs, one for the PC without an Internet IP, we call it "client", the other for the PC with an Internet IP, we call it "server". But it is not the usual server-client relation: the "client" works in passive mode, while the "server" works in active mode --- that is, the "client" accepts instructions from the "server".
Usually you use OH like this:
1. Before you go home, start "client" on your office PC, lock the PC with password, leave it there working.
2. At home, start "server". The "client" will connect you immediately. After finishing your job, instruct the "client" to power off.