To install a new add-on module in your database using the web interface, follow these steps:

1. Connect to the instance using the Administrator account and open the Apps menu:

2. Use the search box to locate the add-on you want to install. Here are a few instructions to help you with this task:
   • Activate the Not Installed filter
   • If you're looking for a specific functionality add-on rather than a broad functionality add-on, remove the Apps filter
   • Type a part of the module name in the search box and use this as a Module filter
   • You may find that using the list view gives something more readable
3. Click on the Install button under the module name in the card.

Note that some Odoo add-on modules have external Python dependencies. If Python dependencies are not installed in your system, then Odoo will abort the installation and it will show the following dialog:

To fix this, just install the relevant Python dependencies on your system.

To update a pre-installed module in your database, use the following steps:

1. Connect to the instance using the Administrator account.
2. Open the Apps menu.
3. Click on Apps:

4. Use the search box to locate the add-on you want to install. Here are a few tips:
   • Activate the Installed filter.
   • If you're looking for a specific functionality add-on rather than a broad functionality add-on, remove the Apps filter.
   • Type a part of the add-on module name into the search box and then press Enter to use this as a Module filter. For example, type CRM and press Enter to search CRM apps
   • You may find that using the list view gives you something more readable.
5. Click on the three dots at the top right-corner of the card and click on the Upgrade option:

Activate developer mode to see the technical name of the module. See Chapter 1, Installing the Odoo Development Environment, if you don't know how to activate developer mode:

After activating developer mode, it will show the module's technical name in red. If you are using Odoo Community Edition, you will see some extra apps with the Upgrade button. Those apps are Odoo Enterprise Edition apps, and in order to install/use them, you need to purchase a licence.