I am working in a project for three days in the week. Is it possible to view only the days I am working in this project.

For example: I work monday, tuesday en friday. When I plan a task for 24 hours starting on monday I want the it fills in tuesday and friday automatically.

Hope this is working because it is to much work to plan tasks per day.

[Lizard]

In the calendar view, choose "Normal Work Week for Project" from the drop-down in the lower left corner. Now edit the green rectangles to match your working hours. You can resize the existing ones, draw new ones, or shift-drag to erase portions of the rectangles.

You may also want to use the Project formatting inspector to adjust the 'days per week' setting. If you're working 3 8-hour days per week, this should be 24 instead of 40.

These features are also covered in Step 5 of the Tutorial in the OmniPlan help.