Novell NETWARE 6-DOCUMENTATION Manual page 1326

Figure 18 Domain Properties Panel
In case the NetWare NIS Server is a slave for a domain and the master NIS
server for that domain is changed to some other server; to get the updates from
the new master, you need to change the NIS master server name for the
domain object present in the NetWare NIS slave server.
Right-click Domain object > click Change Master. A panel similar to the
following appears:
Figure 19 Change Master Dialog Box
Enter the IP address of the new NIS master server. The NIS slave server will
now contact the new master server for updates on all the maps under this
domain.
Working with UNIX Machines 103