A system that is an NFS server shares one or more of its file systems over the network. A server keeps a list of currently exported file systems and their access restrictions (such as read-write or read-only). You can share a resource by adding an entry to the /etc/dfs/dfstab (distributed file system table) on the server and then typing shareall. See the dfstab(4) and the share(1M) manual pages for more information.
You do not need to perform any additional steps on the NFS server to make the shared file systems available to the automounter running on NFS clients.