From the task pane, click Contacts, then click the name of the member you wish to add to the project.
On the window that pops up, select the project/s under Add to specific projects then click Save.
Roles
The following roles are available for the users:
Project Collaborator - Can access most of the task-related features for the projects assigned to them.
Timesheet / Expense User - Can create and submit timesheets & expense reports.
Scheduling User - Can be scheduled to a project or task
Project Manager - Super user for Project Management
Scheduling Manager - Can manage schedule of resources assigned to the projects
Schedule Viewer - Can view schedules assigned to team members
Invoicing Manager - Overall Finance Function
Timesheet Approver - Approves timesheets submitted by the team members
Expense Approver - Approves expenses submitted by the team members
Administrator -can manage accesses
To summarize, these roles have these access levels: