Yes. If the iDRAC is discovered via WSMAN or SNMP protocols and/or Blade server in-band NIC is discovered via SNMP/WMI, they are automatically grouped under respective chassis in "Modular Systems" group. The sub group will be named as: Chassis_<ServiceTag>.
In fact all the components of chassis such as CMC, Blades, iDRACs, Switches, Storage will all be automatically grouped after these devices are discovered.
Thanks,
Raj Shresta