}
```
### InstallAddons
-This policy sets domains that can install extensions
+This policy sets domains that can install extensions, as well as the default behavior.
```
{
"policies": {
"InstallAddons": {
"Allow": ["http://example.org/",
"http://example.edu/"]
+ "Default": [true|false], /* If this is set to false, add-ons cannot be installed by the user */
}
}
}