This tutorial may be helpful for you, if you may want to use a slideshow on your website, but want only to display on homepage. I will explain you how to create a new modules in Joomla 2.5 and assign it to only one menu point.
1. Go to Module Manager
2. Create a NEW module
3. Choose module type
4. Add New Title and choose the module position
In some cases the module position where you want to display the module, is not in the list. Don’t panic! You can type-in in the position field any module position you want.
5. Assign the module the a specific page
So if you want to display the created module on one or more pages, but don’t want to display over the whole website, please choose in the Menu Assignment tab the ‘Only on the pages selected’ option.
Press the SAVE button and you are done!