You can create as many directories and subdirectories as you want in order to group the devices together. When you create sub-directories, the devices organized in it form subgroups of a group.
A device that is unequivocally identified by its MAC address can only be stored in a single directory, i.e. only as a member of a single group.
To create a directory or subdirectory, proceed as follows:
In the Directory Tree, select a directory, e.g. "Devices".
Click
.
Enter a name for the new directory.
Press [Enter]. The new directory will be displayed below the selected directory in the Directory Tree.