Talk to the translators
Peruse the results of the search and decide which translators best fit your needs (look at their expertise, their fee, etc.).
Send them a brief message describing what you need.
You can message back and forth with your translator and even send him a short sample of the work to translate to see if it's to your liking. Every time you receive a message, a notification is sent to your email.
Once you decide upon a translator that is fitting, ask him to send you a 2-Drops-Work-Offer.
A link to the Work Offer will be sent to your email. Upon viewing the Work Offer, you will be able to pay it (payment is via PayPal but you do not need a PayPal account).