add how to set up hierarchical teams (DataDog#32134)

* add how to set up hierarchical teams

* lower case

Co-authored-by: Brett Blue <84536271+brett0000FF@users.noreply.github.com>

* Update links

* Update link to be relative

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Co-authored-by: Brett Blue <84536271+brett0000FF@users.noreply.github.com>

Author: tomnof

content/en/account_management/teams/manage.md

@@ -60,12 +60,13 @@ Under the team's settings, specify which users can modify the team membership. T
 
 Users with the `user_access_manage` permission can set default rules on who can add or remove members, or edit team details. Set default rules with the **Default Settings** button on the team directory page. Override these policies for an individual team on the team details panel.
 
-### Subteams
+### Subteams (hierarchical teams)
 
 With subteams, you can nest teams within each other to mimic your company's hierarchy in Datadog, allowing for a more complete and accurate ownership model. Subteams also provide an enhanced filtering experience; select a larger team (like a director-level group) to find all the data connected to any of its subteams.
     {{< img src="account_management/teams/teams_filter_hierarchies.png" alt="Filter Hierarchical Teams" >}}
 
 On the **Subteams** tab, you can add and remove existing teams. For a clear view of a team's place in its hierarchy, go to [**Service Management** > **Teams** > **Map View**][4], then search for the team by name.
+To automate subteam management based on your organization’s hierarchical structure, use the [Teams APIs][5].
 
 ## Manage teams through an identity provider
 
@@ -96,3 +97,4 @@ To enforce a strict membership model, configure your default team settings so **
 [2]: /account_management/saml/mapping/#map-saml-attributes-to-teams
 [3]: /account_management/scim/
 [4]: https://app.datadoghq.com/teams/map
+[5]: /api/latest/teams/#add-a-member-team