[DOCS] Download prebuilt rules (7.13 addendum)

docs/detections/rules-ui-manage.asciidoc

@@ -6,6 +6,8 @@ On the Detection rules page, you can:
 
 * <<load-prebuilt-rules>>
 * <<select-all-prebuilt-rules>>
+* <<download-prebuilt-rules>>
+* <<manage-rules-ui>>
 * <<import-export-rules-ui>>
 * <<troubleshoot-signals>>
 
@@ -56,13 +58,16 @@ To download the latest version of prebuilt rules:
 
 . In {kib}, go to *Fleet > Integrations*.
 . Search for "Prebuilt Security Detection Rules."
-. Select the integration, then click *Add Prebuilt Security Detection Rules*. The integration configuration page is displayed.
-. (Optional) If you have an {agent} enrolled and have created an agent policy you want to assign to this integration, select it from the drop-down.
-. Configure the integration settings by entering a name and optional description.
-. Click *Save integration* in the lower right corner.
-
+. Select the integration, then select the *Settings* tab. The integration settings page is displayed.
++
+[role="screenshot"]
+image::images/install-prebuilt-settings.png[]
++
+. Click *Install Prebuilt Security Detection Rules assets*.
+. Click *Install Prebuilt Security Detection Rules* to confirm the installation.
++
 [role="screenshot"]
-image::images/prebuilt-integration.png[]
+image::images/install-prebuilt-rules.png[]
 
 [float]
 [[manage-rules-ui]]