You will see it listed at "Admin > Modules > Assign new module > Module Name (drop down)" (tiki-admin_modules.php).
See these pages for information that applies for all modules:
- Module--Overall introduction and overview
- Module Admin--Introduction to the module admin pages for site-wide and individual module settings
- Index of Modules--Links to the documentation of individual modules
- User Modules--how (if the feature is active) users can choose and place their modules
- Mods Type Modules--links to modules that are installed as components