New answers tagged task-list
As Eric mentioned in the comment already, you can do it using method described in the link. Instead filtering by user, you'll have to filter by path to limit results to one site collection. Another solution is to use Content Query WebPart (it requires SharePoint Server Publishing Infrastructure site collection feature to be activated). You can use it to ...
Go to List Settings > Advanced Settings -> Quick Edit (switch to No)
The short answer is SharePoint will not calculate the summary task percentage for you automatically. You could develop an event receiver that updates the summary task every time a sub task is changed. Or you could try developing a workflow that does the same thing.
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