# Set up campaign SiteAccess

The following example shows how to set up a special `campaign` SiteAccess. This SiteAccess serves a site devoted to a special campaign, separate from the main company website (`site` SiteAccess).

The `campaign` site uses a different part of the content tree than the main site, but shares some media files with it.

## Configure SiteAccesses

First, in SiteAccess configuration, add the `campaign` SiteAccess to the list under the `ibexa.siteaccess` [configuration key](https://doc.ibexa.co/en/latest/administration/configuration/configuration/#configuration-files):

```
ibexa:
    siteaccess:
        list: [site, campaign]
        groups:
            site_group: [site, campaign]
        default_siteaccess: site
        match:
            Map\URI:
                summer-sale: campaign
                site: site
```

The `match` setting ensures that when a visitor accesses the `<yourdomain>/summer-sale` URI, they see the `campaign` SiteAccess.

## Set root folder

Next, with the following content structure, you need to separate the "Campaign" folder as root for the new site:

To do it, set the root level for `campaign` to access the "Campaign" Location and its sub-items only:

```
ibexa:
    system:
        campaign:
            content:
                tree_root:
                    # LocationId of "Campaign"
                    location_id: 57
```

Thanks to this configuration, you can access `<your site>/campaign/Articles/Article2`, but not `<your site>/campaign/General/Articles/Article1`.

## Reuse content

Finally, reuse some content between sites, for example "Logos" from "Images/Media". You can allow the `campaign` site to access them, even though they're in a different part of the tree, via [`excluded_uri_prefixes`](https://doc.ibexa.co/en/latest/multisite/multisite_configuration/#location-tree):

```
ibexa:
    system:
        campaign:
            content:
                tree_root:
                    location_id: 57
                    excluded_uri_prefixes: [ /media/images/logos/ ]
```

Now, when you use the `campaign` SiteAccess, you can reach `<your site>/campaign/Media/Images/Logos`, despite the fact that it's not a sub-item of the "Campaign" location.

As a next step, you can configure different [designs](https://doc.ibexa.co/en/latest/templating/design_engine/design_engine/index.md) for the two SiteAccesses.