How can I install the Bills module?

In order to install the Bills module, you must install the Inventory Add-On extension from the extension store.
Follow these steps to install the extension:

1. Click the User Profile on the top right corner of the screen.
2. Click the Settings button.
3. Search for Extensions column.
4. Select Extension Store.
5. Search for Vtiger Inventory.
6. Click Install.

The Bills module along with other modules will be installed in the Inventory tab.
To know more about Bills, click here.