An app is a collection of components such as tabs, reports, dashboards that address a specific business need. You can customize the standard apps to match the way you work. Users can build his/her own on-demand apps by grouping standard and custom tabs into new custom apps. A custom app consists of a label, a description, and an ordered list of tabs.
Manage Custom Apps

- To view and manage your organization's Apps, click Your Name | Setup | App Setup | Apps | New.
Fill details

Fill the required fields and click on Next button.
Select Image

Choose the Tabs for your Apps

- Select the existing Tabs from Available Tabs.
- Click on Add button,
- Arrange your tabs in Selected Tabs list,
- Click on Next button.