It may be possible to invite an external stakeholder for a particular role (say the assessment of submitted documents) to be performed in the system. The request can be shared through email with a link for registration into the system for that role.
It is possible to send a document/content from the system to target group members for feedback by including their email addresses in the recipient list while sending the document.
Tower - 1, Unit 1904, PS Srijan Corporate Park, GP Block, Sector - V, Bidhan Nagar, Kolkata - 700091. West Bengal. India.