docs(ui): Clarify how to sort by group by default

README.md

@@ -111,6 +111,7 @@ Have any feedback or questions? [Create a discussion](https://github.com/TwiN/ga
   - [disable-monitoring-lock](#disable-monitoring-lock)
   - [Reloading configuration on the fly](#reloading-configuration-on-the-fly)
   - [Endpoint groups](#endpoint-groups)
+  - [How do I sort by group by default?](#how-do-i-sort-by-group-by-default)
   - [Exposing Gatus on a custom path](#exposing-gatus-on-a-custom-path)
   - [Exposing Gatus on a custom port](#exposing-gatus-on-a-custom-port)
   - [Configuring a startup delay](#configuring-a-startup-delay)
@@ -2473,6 +2474,16 @@ The configuration above will result in a dashboard that looks like this when sor
 ![Gatus Endpoint Groups](.github/assets/endpoint-groups.jpg)
 
 
+### How do I sort by group by default?
+Set `ui.default-sort-by` to `group` in the configuration file:
+```yaml
+ui:
+  default-sort-by: group
+```
+Note that if a user has already sorted the dashboard by a different field, the default sort will not be applied unless the user
+clears their browser's localstorage. 
+
+
 ### Exposing Gatus on a custom path
 Currently, you can expose the Gatus UI using a fully qualified domain name (FQDN) such as `status.example.org`. However, it does not support path-based routing, which means you cannot expose it through a URL like `example.org/status/`.