Additional Third Party Logins can be added ONLY if you have also a standard Passpack User ID andPassword combination. If you do not have these, you can set them up under Account > Set a User IDand Account > Set a Password. Instructions are here.
To manage your Third Party Logins, go to Account > Associate Another Login from within your Passpack account. Click the Start Now button and then choose which kind of login you'd like to associate with the account.