Not able to save credentials to a folder/connection

Hello

I am trying to do a proof of concept with a Trial license but don't seem to be able to save a credential against a folder or connection entry. I cannot see the Credentials->General tree pane, but if I go to the Multiedit page I can. If i select a credential in the multiedit pane and tick the checkbox the credentials don't save either. Is there a limitation on the trial account or am I doing something wrong?

I appear to be an administrator. Please assist.