Remote assistance is a feature that, as its name suggests allows a user to remotely control another computer. The user can then use the remote computer in the same way as if the user is physically present there. Most modern operating systems support this feature. Of course both these computers should have a supported means of communication present between them. As shown in this video, the first step involves configuring the appropriate settings and administrative privileges required to connect them. Next step is to actually initiate the connection process (The connection should be manually authorized at the other end). Finally, when connected, you may actually work on the remote computer from your own computer.