Job page don't dispaly 'contact client' button for logeed in users

Hi,

In my site, http://bit.ly/1h7Avck, for a logged in user the job page of a particular listing don't show the 'Contact' button. Instead it shows 'Become expert' button.

How can I set the subscriber to contact a client directly without them having to create a expert profile in my site? The WPMU Dev's own job board works like this.

Thanks.