Use the search bar to find or add a member, and the drop-down menu on the right to change the display order. Click a letter on the left to scroll to that letter. Click on a member to view their profile.
Note on project sharing: If you have joined a project of which you are not the creator (another member has shared the project with you), it is possible that some members of the project are not included in the list of members with whom you collaborate (they don’t appear in your member list and you can’t share other projects with them). You can invite them directly to collaborate by selecting one or more members and clicking on “Invite“.