Officially announced these days, FS2Crew updated the PMDG 737 NGX edition of their multicrew management addon.
The major update is highly recommended for all customers, who need now to redownload the main installer at the shop they purchased from.
For PMDG 737 NGX pilots, FS2Crew adds copilot, flight attendants but also ground crew and dispatchers dialog / interactions / checklists to increase realism as all are copied of real airline operations. Choose either the Special Bundle, to get Voice and Buttons edition, or the Captains Set to purchase as a bonus the Audio Ground School to learn in depth about 737 NGX operations and capabilities.
Of course, FS2Crew needs you to own first the PMDG 737 NGX, sold as a separate product.