Select a task from the tasks grid on the right and drag the task onto the Diary section. If you drop it into the Planned side it will create a Planned Work record against the diary contact or an Actual Work record if you drop it into the Actual area.
As soon as you drop the the task it will pop up the Edit Work form and you can complete the details or the work activity.
You can start the timer by either pressing the Start button

either on the main form or in a project.
This starts a timer that appears in the Main Form button bar

The timer shows the elapsed time as a digital clock. You can pause a timer or press the tick to stop it.
It allows you to have multiple timers running so that you can switch between different tasks (say if you get a phone call while working on something else.comes in). To start a new timer just press the start button again.
You can then switch between active timebrs by selecting a timer from the drop down list. This pauses the other timers and restarts the selected one.
When you have finished working on a task, make sure it is the selected timer, and press the tick to stop it. If you started the timer from a project it will present a list of tasks for the project, select one then press OK.

If you press Cancel the timer will stop and close.
If you started the timer from the Desktop you will need to choose a Project first, then select a Task.
When you press OK the standard Work form appears with the start and stop times populated from the timer. Complete this as per normal.
Billable and Non Billable Work
We expect that you will always want to record the cost of the work done on a project but for various reasons you may not want to bill the time. If you uncheck the Billable checkbox on the Work record only the cost will go through to Job Costs when billing and the sell price will be set to zero.
The Billable check box defaultis set based on the Billable setting on the Task but you can over ride this on the Work record to either turn it on or off.
Overtime
If the work that you are doing is overtime check the Overtime check box. The overtime cost and sell rates from the Project Contact will then apply to all of the work time.
If the work is mix of normal and overtime you need to separate into two work records. One for the normal time and the other for the overtime.