To set task status select required status from "Status" drop-down list in "New Task" dialog while creating a new task.
To change task status use one of the following ways:
- Open "Edit Task" dialog and select required status from "Status" drop-down list
Right click on required task on Task List, Task Tree or Calendar grid and select required status from "Change Status" drop-down list
To change the status of several tasks simultaneously select each of them while holding "Ctrl" key and change the status using one of the ways mentioned above.