Use the Share task type to share text and/or files with multiple people. You can change the content while the share is active, and you can permit other people to change the content too.
The share task is started automatically. The default action is Open. If nothing has yet been entered, this asks you to enter text and attachments, and to indicate whether other people can edit the information.
Once there is content, the open action will show what you have entered, with an option to edit it.
Use Edit to edit the content.
Use Share to share the content. Partners will be able to view the content, but only be able to edit the content if you set the Allow people you share with to edit option.
Use Finish task to finish the task.
When you finish the task, or remove a share, the partner's task is deleted, and not just marked as recalled, because there is no longer any purpose to the task.
You can also use the share task type, without sharing it, as a useful place to hold notes and files within a project.