Step-By-Step SSH Key Authenticator documentation

Is step-by-step documentation available for using the SSH Key Authenticator Plugin? We want to use it for https://access-ci.org/ but I'm having trouble locating the relevant documentation.

At https://spaces.at.internet2.edu/display/COmanage/SSH+Key+Authenticator+Plugin I see that the plugin is enabled by default and is compatible with the LDAP Provisioning Plugin.

At https://spaces.at.internet2.edu/display/COmanage/LDAP+Provisioning+Plugin I see links to http://serverfault.com/questions/653792/ssh-key-authentication-using-ldap and https://linux.die.net/man/8/ssh-ldap-helper which provide some clues, but what I really need is step-by-step instructions for enabling SSH Key authentication via COmanage that I can point the https://access-ci.org/ system administrators to.