In real world we have Teams. Departments. For Eg, I know that Mr X, Mr Y, and Mr Z are a part of Design Team, so while assigning tasks instead of selecting everyone from the design team individually I should be able to select design team, and the software should automatically assign the task to everyone who is involved in the design team.

Second problem is Task Leader. Usually all the tasks have a responsible leader, and then the collaborators. You should have an additional column of task leader, so that everyone can know who is leading the task.

third point is that this software does not have budgets. I wish to add budgets to the task, so how can I do it?