Once you conduct your search, you will see 3 jobs as search result. You can apply to the most suitable job/s by just typing the below command
apply jobID Crpljobs Username, JobID is mentioned at the end of each job in search result, Username is your crpljobs account with which you login to crpljobs.
Before applying, please note that you have put the same Gmail ID in your Crpljobs Account with which you are chatting in Gtalk.
Also we do authentication properly by looking up your Gmail ID with your Crpljobs Account so that no other user can apply through your Crpljobs Account using his Gtalk and neither you can apply by putting someone else's Crpljobs Username.