sdk-for-dart/docs/examples/teams/create.md

import 'package:dart_appwrite/dart_appwrite.dart';

Client client = Client()
    .setEndpoint('https://<REGION>.cloud.appwrite.io/v1') // Your API Endpoint
    .setProject('<YOUR_PROJECT_ID>') // Your project ID
    .setSession(''); // The user session to authenticate with

Teams teams = Teams(client);

Team result = await teams.create(
    teamId: '<TEAM_ID>',
    name: '<NAME>',
    roles: [], // (optional)
);