assigned tasks process report

Question

Hi, I need to (kind of urgently) modify a process report that shows only my assigned tasks to now show all tasks assigned to any user or group. I would need to add a filter so I can choose to see only my tasks or all the tasks. This report is a process report and in the designer says the "report context" is my user. How can I change it to be "all users". Do you know if there is a tutorial that I can do to understand this concept of 'Process Reports" I have searched but I am lost with so many tutorials available. Thanks! 
 Luis

akashmp · Answer

Hi , 
 If tasks are assigned to groups then you can pass report context as groups to fetch the data, if not then you need to pass context as users and provide user list to fetch the tasks assigned to them. Groups cant be passed but array of users will work . From UI use a!queryProcessAnalytics().