Hi Robert! Thanks again for your answer.
We tried hard, but we could't make it. Maybe we miss understood something.
Although we use the anchor milestone the scheluder moves the weekend task on monday or friday (depending on the constraints) and we can't excluding it from Autoscheduling in order to get the % complete and total duration in the summary task.
We also try next:
1. Exclude from Autoscheduling the weekend task.
2. Set dates and constraints on saturday.
3. Complete the "% complete" attribute with "1" (considering that scheduler doesn't move tasks when % complete is higher than 0).
4. Uncheck the "Exclude from Autoscheduling" attribute.
5. Run & Publish.
But the result wasn't what we expected: the summary task doesn't summarize the weekend task either.
It seems the scheduler realized our trick
Maybe it's no possible in Clarity, but we think is a very common request to have calendar exception tasks in project planning.