The project owner can only collaborate with other JBI SUMARI users who have an active JBI SUMARI subscription. Please ensure they have an active subscription BEFORE inviting to collaborate on your project. Kindly refer to "How do I subscribe to JBI SUMARI" in the Basics of JBI SUMARI page.
The level of access the invitee can be assigned is up to the discretion of the project owner. If you have been invited by the project owner as a privileged author you will also be able to invite other participants to the project.
Please note, that each, individual user will need their own access to JBI SUMARI and access cannot be shared between users.