= Design/Setup: Setup Omni with Multiple Users =
Omni gives you the capability of giving access  to other users on your compute resources. Depending on which AM you are using to get resources from,  this is done in a different way. If you are reserving resources in a ProtoGENI AM, then you can specify a comma separated list of  users in the `users` attribute of the `[omni]` section, and specify the information for each 
user in a corresponding section. Let's try this now:
{{{
#!html
<table>
    <tr>
       <td>
        <img border="0" src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/design_on.2.png?format=raw"  /> 
      </td>
      <td>
   
  <ol>
    <li> Ask the your neighbor for his/her usernane. 
    <li>While in a terminal, generate a public key for them under <code>~/.ssh/ :
     <ul> <li>cd ~/.ssh</li>
        <li> ssh-keygen -f id_rsa_&ltneighbor_username&gt</code></li>
     </ul>
   </li>

     <li> Open the omni_config file; its under <code>~/.gcf/omni_config </code> <li>
     <li> Add the new user in the users list and add a new section using as his/her public key the key you just generated. 
     </li></ol>
  </td> </tr>
  </table>
}}}

{{{
[omni]
default_cf = pg-gpo
users = alice, bob 

# ---------- Users ----------
[alice]
urn = urn:publicid:IDN+pgeni.gpolab.bbn.com+user+alice
# You can define multiple keys
keys = /home/alice/.ssh/id_rsa.pub

[bob]
urn = urn:publicid:IDN+pgeni.gpolab.bbn.com+user+bob
keys = /home/alice/.ssh/bob_id_rsa.pub 

[pg-gpo]
type = pg
ch = https://www.emulab.net:12369/protogeni/xmlrpc/ch
sa = https://www.pgeni.gpolab.bbn.com:12369/protogeni/xmlrpc/sa
cert = /home/alice/.ssl/pgeni/encrypted-cleartext.pem
key = /home/alice/.ssl/pgeni/encrypted-cleartext.pem
}}}