There are two ways you can assign someone a task in Teodesk and make them responsible for its finalization.
The first way is by hovering over a task and then clicking on the box with the question mark.
After you have clicked on the box, a list of all possible assignees will appear. Select the one you want to assign the task to and they will automatically be listed.
The second way of assigning a task to someone is by first clicking on the task itself. When you have done this, a side bar will appear.
By clicking on the pen icon in the Task Lead section, a list of all possible assignees will appear. Select the one you want to assign the task to and they will automatically be listed as the Task Lead.