In the Web TimeSheet application you can have a maximum of 10 levels of sub tasks for each of the task. There is no limit to the number of tasks that can be created within the Web TimeSheet application. Starting from the 5th level sub-task onwards, you will receive a warning, a screenshot of which is attached with this article. If you are ok with the effect it has on the performance of the application you can click on Ok else click on Cancel. Once the maximum level of Sub-tasks is reached you will not see the Add icon next to task.