How to set up ssh connection to another system using "Passwords and Encryption Keys"?

[Chris G]

Can anyone point me at some instructions which show how to set up an
ssh connection using the Passwords/Keys kept in "Passwords and
Encryption Keys" (that's actually seahorse).

I've hunted and hunted but can't find anywhere that gives step by step
instructions on how to do it.  E.g. I want something like:-

    1 - Create a new XXX entry in "Passwords and Encryption Keys"
    2 - Copy the public key to the remote system
    3 - Logout and log back in again
    4 - ssh to the remote system should now work 'passwordless'

I need to know what needs to be installed and running on the system as
well as a "what the user does" sequence.  Currently I have done
something like the sequence outlined above but it simply doesn't work
at all.

-- 
Chris Green