Hi,
Are you speaking about "clusters"?
Cluster is the object which may include several different controls inside. For example one numeric and another is boolean (or any other types).
To create cluster on the front panel goto "Controls->Array&Cluster and choose cluster. Then to fill it with elenents simply take any other control and place it inside the cluster.
To read data (on block diagram) stored in different elements you must use "unbundle" or "unbundle by name" functions from "Functions->Cluster" palette.
You can get more info from help file.
Good luck.
Oleg Chutko.