You can populate NIS+ tables from any NIS+ client or from the root master server. You do not have to be logged in as superuser (root) to populate NIS+ tables, but you do have to have the proper credentials and access rights. If you are going to replace or merge the entries in the table with the entries from the text file, you must have create and destroy rights to the table. If you are going to append the new entries, you only need create rights.
The NIS+ security system is complex. If you are not familiar with NIS+ security, you may want to review Chapter 11, NIS+ Security Overview before starting to set up your NIS+ environment.
After you complete this operation, the table entries will be owned by the NIS+ principal that performed the operation and the group specified by the NIS_GROUP environment variable.