If you need to apply to join the team, you can refer to the following methods:
1. Click on this link in the phone to view the teams you may know: https://h5.dingtalk.com/shouldbein/index.html#/?_k=ng0gfb
2. In the [Mobile DingTalk] - [Contacts] -  upper right corner [plus] - [join the team], you can search organizations in three ways: search team name to join, search team number to join, face-to-face scan code to join;
3. Contact the person in the team to invite to join:
Please ask the colleagues in the team to [DingTalk mobile app]-[Contacts], click upper right sign - [Add employees to the team] and select the targeted organization, send an invitation to submit the application to you. When finished applying, you will automatically join the team.
4. The company's administrator can also directly add members to the team:
mobile phone: [Contacts] - [Organization Management] - [Company Contacts] - [Manage Employee / Department] - [Add Employee].
PC : The administrator logins into admin panel (oa.dingtalk.com), click [Contacts] - [Add Member] to add them individually, or click [Batch Import/Export] to batch operations.

[Tips]:
A DingTalk account can be added to a maximum of 100 companies (certified companies + uncertified companies), of which up to 10 uncertified companies.