# Defining global user commands

Global commands appear in the Commands list of options located at the top of the Devices page.

To define global user commands:

2. In the left panel, choose Commands.
3. In the Define Commands area, click the action menu and choose Add User Command.
4. In the Add User Command dialog box, specify a name for the command, and then click OK.
Only letters, numbers, and underscores are allowed in command names. Spaces are not allowed.
5. In the Define Commands page, specify a description of what the command will do.
6. In the Command section, enter the TALES expression-based command you want to run on the device.
7. Enter your system account password for confirmation, and then click Save.