Cisco ASA Object Group for Access-List

Thanks Rene,

I got that but a doubt strike me - lets start with the below configuration:

network object  TEST1
subnet 10.0.0.42.0 255.255.255.0
object-group network dmz
ASA-FW01(config-network-object-group)?
  
  description     Specify description text
  group-object    Configure an object group as an object
  help            Help for network object-group configuration commands
  network-object  Configure a network object
  no              Remove an object or description from object-group
ASA-FW01(config-network-object-group) network-object ?

  network-object-group mode commands/options:
  Hostname or A.B.C.D  Enter an IPv4 network address
  X:X:X:X::X/<0-128>   Enter an IPv6 prefix
  host                 Enter this keyword to specify a single host object
  object               Enter this keyword to specify a network object

FW01(config-network-object-group)# network-object 10.0.32.0 255.255.255.0  
FW01(config-network-object-group)# network-object object TEST1 

So my question is when I can populate the group with this command – network-object 10.0.32.0 255.255.255.0 – why should I create a network-object TEST1 and then place this object-network under the group as FW01(config-network-object-group)
network-object object TEST1