# Defining Groups

You can define a new group definition or modify an existing group definition consisting of previously defined recipe and trigger definitions.

The Group definition combines recipe and trigger definitions to be used by Substation ES. You can specify the group names in the transformer SIP member to tell Substation ES which groups of recipe and trigger definitions you want to load.

With grouping, one configuration file can be used by multiple instances of Substation ES at the same time, thus reducing the requirement for defining duplicate recipe and trigger definitions.

## Prerequisites

Ensure that you have done the following tasks:

- Defining Recipes
- Defining Triggers

## Procedure

1. Select option 8 - Define Groups.
   For more information about this panel, see Group Definitions Panel.
2. Type either of the following:
   - To create a new entry, enter `ADD` on the command line, and then press Enter .
   - To choose an existing definition to modify, enter `S` in the Sel field, and then press Enter.
3. Type a group name.
   The group name can be up to 15 characters long.
4. In the Sel field, enter `S` next to each trigger and recipe that you want to select into the group. Press Enter to continue the process.
   For more details for this panel, see Select Triggers and Recipes for Group Panel.
5. Press Enter before exiting the panel.
6. Exit the Define Groups panel by doing either of the following:
   - Pressing PFK3.
   - Entering END on the command line and pressing Enter.
7. Review the message displayed in upper-right corner of the Transformer Configuration panel to verify that your changes have been saved.

Copyright © TIBCO Software Inc. All rights reserved.