If you use uppercase group and user IDs

If you use only uppercase group and user IDs on your system, RACF® users can use the BPX1SEC1 sample in SAMPLIB. They can also use the ADDGROUP or ADDUSER commands to define the group IDs and user IDs, as shown in the following examples.

To define the TTY group:
```
ADDGROUP TTY (OMVS(GID(2))
```
where 2 is an example of a unique group ID on your system. Do not connect users to this group. This is the same group that is specified on the TTYGROUP statement in the BPXPRMxx member on your target system.
To define the UUCPG group:
```
ADDGROUP UUCPG OMVS(GID(8765))
```
where 8765 is an example of a unique group ID on your system.
To define the UUCP user ID, issue:
```
ADDUSER UUCP DFLTGRP(UUCPG) PASSWORD(xxxxxxx) 
OMVS(UID(396) HOME('/usr/spool/uucppublic') 
PROGRAM('/bin/sh'))
```
where
- 396 is an example of a unique OMVS UID. Do not use UID(0).
- HOME('/usr/spool/uucppublic') is a required parameter that specifies the initial directory path name for the user ID.
- PROGRAM('/bin/sh') is a required parameter that specifies the path name in the shell program for the user ID.