UpStream has been fully tested on WordPress multisite networks and will work smoothly.

Let’s show you how to install UpStream on a multisite network.

## Understanding a Multisite Network

There are three key parts to a multisite network.

1. **Network Admin**: This is control panel for your multisite network.
2. **Main Site**: This is the central WordPress site. It will be located at your main domain name, for example: upstreamplugin.com
3. **Sites**: These are the sub-sites that form your network. They will be located at upstreamplugin.com/subsite or at subsite.upstreamplugin.com.

![Network Admin area in a Multisite network](https://support.kelsiem.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBcklPIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--dcaea61e7ed3fb727307142c502b31e2f582d56f/multisite-areas-wordpress.png)

## Installing Plugins on a Multisite Network

Plugins can only be installed from the “Network Admin” area

- Go to “My Sites”, then “Network Admin”.
- Click “Plugins”.

![Plugins link in the WordPress network admin](https://support.kelsiem.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBcnNPIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--cd2ef093dde632dcf6e5820a8f2e9d8d3afc31e8/network-admin-plugins.png)

- Click the “Add New” button.
- Here you can install the main UpStream plugin, or [click “Upload Plugin” to install UpStream extensions](https://support.upstreamplugin.com/hc/upstream-plugin/articles/install-upstream-extensions).

![Installing UpStream in a WordPress multisite](https://support.kelsiem.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBcThPIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--9ebcc55098c3a9efb7c3f4062d8bf2b1d94fa63a/install-upstream-multisite.png)

- After installing plugins you will see this screen below. If you click “Network Activate” then you won’t be able to see the “Delete” button.

![Installing plugins in a WordPress multisite](https://support.kelsiem.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBc0FPIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--31edb01fea5e6102e266d80ab1b6faa9f8b01883/plugins-installed-multisite.png)

Now that the plugins are installed, you can decide how to make them available to the sites in your network.

[Click here for instructions on activating plugins in your multisite network](https://support.upstreamplugin.com/hc/upstream-plugin/articles/activating-multisite).