diff --git a/roles/custom/matrix-synapse-admin/defaults/main.yml b/roles/custom/matrix-synapse-admin/defaults/main.yml
index 9f396743a..4c1321e9a 100644
--- a/roles/custom/matrix-synapse-admin/defaults/main.yml
+++ b/roles/custom/matrix-synapse-admin/defaults/main.yml
@@ -175,8 +175,22 @@ matrix_synapse_admin_configuration: "{{ matrix_synapse_admin_configuration_defau
 # restricts the homeserver(s), so that the user can no longer define a homeserver manually during login.
 matrix_synapse_admin_config_restrictBaseUrl: "{{ [matrix_homeserver_url] }}"  # noqa var-naming
 
+# Controls the asManagedUsers configuration setting (managed by playbook), which, if defined,
+# restricts modifications of the specified users (e.g., bridge-managed).
+# You should use JS regex syntax to match the user IDs.
+# Example for mautrix-telegram: ["^@telegram_[a-zA-Z0-9]+:example\\.com$"]
+# WARNING: you want to use matrix_synapse_admin_config_asManagedUsers_custom instead of this variable.
+matrix_synapse_admin_config_asManagedUsers_auto: [] # noqa var-naming
+
+# Controls the asManagedUsers configuration setting (managed per host), which, if defined,
+# restricts modifications of the specified users (e.g., bridge-managed).
+# You should use JS regex syntax to match the user IDs.
+# Example for mautrix-telegram: ["^@telegram_[a-zA-Z0-9]+:example\\.com$"]
+matrix_synapse_admin_config_asManagedUsers_custom: [] # noqa var-naming
+
 # Controls the asManagedUsers configuration setting, which, if defined,
 # restricts modifications of the specified users (e.g., bridge-managed).
 # You should use JS regex syntax to match the user IDs.
 # Example for mautrix-telegram: ["^@telegram_[a-zA-Z0-9]+:example\\.com$"]
-matrix_synapse_admin_config_asManagedUsers: [] # noqa var-naming
+# WARNING: you want to use matrix_synapse_admin_config_asManagedUsers_custom instead of this variable.
+matrix_synapse_admin_config_asManagedUsers: "{{ matrix_synapse_admin_config_asManagedUsers_auto + matrix_synapse_admin_config_asManagedUsers_custom }}" # noqa var-naming