Need help to create a customized dashboard

[Ramesh]

I have a requirement to create a dashboard to track my tasks based on status, Assignee and number of tasks and sub-tasks. Irrespective of the task reporter.

Requirement 1: How many tasks are assigned to me and have been assigned to the approver after the transition of the task from "IN progress" to "Completed".

Requirement 2: I would also like to track the status of each of the tasks that were assigned to me and this should include the tasks that have been moved to a different assignee, in this case my manage after the task were transitioned to completed status from "In Progress" status.

This Dashboard/jQuery should only show my tasks that have been moved to my manager after their transition from In Progress to completed status.

Requirement 3: I need another dashboard to show the total number of tasks that are assigned to me based on the issue type(Task, Sub-task)

I would like to mention that the tasks will have different assignees in depending on status of the tasks.

For ex: If a task "A" is assigned to person "X" and person "X" works on the task moving it from open status and bring it to "In Progress" status then after this when the task is marked completed, This task gets assigned to the manager of Person "X" who can be considered as person "Y" This will give you an idea that there are 2 or more assignees involved in closure of the task "A".

Now based on the above example, the person "X" to whom the task was first assigned is looking to develop a single dashboard (Can be a pie chart) that includes the various status of transition of task "A" which has various assignees such as Person "X" and person "Y".