After "mix phx.gen.auth Admins Admin admins" with added working register and login path.

config/config.exs

@@ -7,6 +7,19 @@
 # General application configuration
 import Config
 
+config :beet_round_server, :scopes,
+  admin: [
+    default: false,
+    module: BeetRoundServer.Admins.Scope,
+    assign_key: :current_scope,
+    access_path: [:admin, :id],
+    schema_key: :admin_id,
+    schema_type: :binary_id,
+    schema_table: :admins,
+    test_data_fixture: BeetRoundServer.AdminsFixtures,
+    test_setup_helper: :register_and_log_in_admin
+  ]
+
 config :beet_round_server, :scopes,
   user: [
     default: true,