There are two places you can create a task in Tara. Where you create a task provides context for that task.
1. Create within a requirement: after a requirement is formed, a text box will drop down where the first task can be created. Hovering between existing tasks reveals a purple + that can be clicked to add more. Any task created here is associated with the requirement.
2. Create in the backlog of the work drawer: Sometimes there are certain small tasks - i.e. a bug fix, some maintenance work, etc. - that may not be part of a larger feature or project. These can be formed outside of a requirement using the backlog, located at the top of the work drawer. Once created, backlogged tasks can be found in the tasks bin right below.