You want to use the automount facility to manage one or more file systems. If you do not have the automount facility set up, the wizard sets it up, using /etc/auto.master as the pathname of the automount master configuration file. The automount master file lists the names of each directory that automount will manage and its associated policy file (also known as MapName file) that contains the mount parameters.
On this panel you specify the automount-managed directory that you want to add automounted file systems to, and the name of its associated policy file.
You can find more detailed help on the following elements of this window:
Automount master configuration file