In Cisco packet tracer version 7.2.1.0217 you only can configure the traditional configuration.
Try with GNS3, VIRL, EVE-NG or real devices
The EIGRP named configuration is available from these Cisco IOS® releases:
- Cisco IOS XE Release 2.5
Dont think Packet Tracer has got up to this yet.
THis is a description of gns 3 named maode (you still have to get an IOS for it to work
If you haven’t had a chance yet to explore EIGRP named mode and you don’t want to buy the high-end Cisco gear just to practice at home – all is not lost. You can emulate the experience in GNS3. This blog shows how I did it.
I'm assume you know address families are not on the ccna exam. So far, I think you don't see it until the ccie written exam.
There is a good 3 part series here on CLN Using EIGRP Named Mode: Lesson 1: EIGRP Named Mode and tons of good videos on YT.
The only good book with Named mode story is CCIE RS Vol 1 OCG by Narbik and Paluch see CCIE Routing and Switching v5.0 Official Cert Guide, Volume 1, 5th Edition | InformIT
otherwise use this Cisco link
plus video links shared above , you should have pretty good idea about EIGRP Named mode
what I would do, get GNS3 , 7200s router with IOS 15.x, get some regular EIGRP configs and use auto-convert mode to see how they look in new mode.
Automatic Conversion to Named EIGRP
There is an automatic method to convert the configuration from the traditional way to the new method. Inside the EIGRP process, the command
eigrp upgrade-cli <EIGRP Virtual-Instance Name> needs to be entered. This automatically converts the configuration to the named mode without an impact to the established EIGRP peering: