When evaluating a project management system, you have to consider if it will fit in with your existing project workflow.
For example, there are some project management systems that restrict you into assigning tasks to only one person.
But in the real world, there are times when it's necessary—and even efficient—to assign tasks to multiple people.
Jumptree Project lets you easily assign tasks to multiple people.
In the Tasks Overview you can see the 2 people that are assigned to this task.
TIP: You can use tasks to schedule meetings: