For reference is here a list of example common NIM operational commands:

Define a NIM LPP source:

nim -o define -t lpp_source                               \
        -a server=master                                  \
        -a location=/export/lpp_source                    \
        -a source /export/lpp_source/AIX6100-09-04-1441   \
        lpp_source_name

Define a SPOT from an AIX lpp source

nim -o define -t spot                                 \
        -a server-master                              \
        -a location=/export/spot                      \
        -a source=AIX6100-09-04-1441                  \
        -a installp_flags=-aQg                        \
        spot_name

Kick off a NIM BOS install of a NIM client:

nim -o bos_inst                                       \
        -a spot=SPOT_AIX6100-09-04-1441               \
        -a lpp_source=AIX6100-09-04-1441              \
        -a no_client_boot=yes                         \
        -a accept_licenses=yes                        \
        nim_client_name