I don't know hamachi, but if there's an executable file that's meant to be in /usr/bin/ then you can either
a) Copy it there, or
b) Move it there.

a) cp -p /home/user/filename /usr/bin/.
(note '.' at end, not strictly needed here but can be thought of as 'same name' in this case)

or

b) mv /home/user/filename /usr/bin/.
(same comment as above)

And lastly: Make sure that it's executable:
chmod a+x /usr/bin/filename

('filename' is obviously the file you're copying/moving)

Does the README say anything about 'suid root' or something? If so then there's an additional step.. someone else will explain that if so, I gotta go..