You can share any diagram you are working on directly in the editor.
Prerequisites
A diagram can be shared after it was saved for the first time.
Context
One of the most powerful features in collaborative process design is inviting stakeholders to review and comment on diagrams. This function lets you involve contributors who don't need to be modeling experts. Anyone you invite who isn't already a member of your workspace needs to register and receives a commenting license.
Procedure
Open your diagram in the editor.
In the toolbar, select (Share).
In the dialog, select users from the list or add email addresses for new users you want to invite.
Optional: Add a message.
Send your invite.
Everyone you invited receives an email. Anyone you invite who is not already a member of your workspace needs to register and is assigned a commenting license.