Assigning users to tasks in Visual Studio Team Services

Question

I've just joined my friend's Team Services account (free for the first 5 users account). If I visit the home page (https://XXXXXXX.visualstudio.com/Development/Development%20Team), I can see us both listed as Team Members. I can create backlog items/tasks and assign them to myself. My friend can create backlog items/tasks and assign them to himself. However, we can't assign each other. Why could this be and any suggestions on how to resolve this? Select the correct answer from above options

Answer 1

Don't see the user in the AssignTo drop down list to assign a user to a project Task. Move forward with few more steps here: You won't be able to see the user you want to assign in the assign to dropdown bar. You will only see yourself. Just type in the dropdown box - the letter of that person you want to assign the task to. As shown below: You can see the list of users in your VSTS domain.