Microsoft Project Online Essentials Annual Subscription License.
Project Online Essentials is a team member add-on subscription for customers who have Project Plan 3 or Project Plan 5 Project Online Essentials.
Team members with Project Online Essentials can perform the following Project Online functions:
Use a web-based interface
Update tasks, issues, and risks
Submit timesheets
Share documents and collaborate with Microsoft Teams or Skype for Business users
Project Online is a flexible online solution for Project Portfolio Management (PPM) and everyday work. Project Online provides powerful project management capabilities for planning, prioritizing, and managing projects and project portfolio investments—from almost anywhere on almost any device. Project Online can be used by administrators, portfolio managers and viewers, project and resource managers, and team leads and members. Project Online is built on the SharePoint platform, and it stores data in the SharePoint data store.