[**中文教學**](/c/tutorials-tw/%2Fs%2Finvite-tw)
# Invite Others to a Private Note
Invite trusted people to collaborate on your private note from the <i class="fa fa-share-alt"></i> **Sharing** menu.
>[!Note]Hint
>- Invite people with their **username** or **email address**. HackMD will invite them through email if the invited haven't registered.
>- The default limit for editing permissions on notes is 3 people. If you upgrade to the HackMD Prime Personal Plan or Team Plan, you can enjoy an unlimited number of editors!

# Permissions
Invited users could have different permissions as needed:
| Invitation | Permissions |
| -------- | -------- |
| Read | Invited users can only read the note. |
| Write | Invited users can read and write. |
| Admin | Invited users can read, write, manage other users, and assign note Host. |