AX 2009 R2 Modify EP Role Center - Worklist

Dear All,

Looking for advice on modification of EP Role Center - Worklist (AX 2009 R2). My Customer has requested for few modifications on the worklist like:

1. Add additional fields on the grid

2. Remove existing fields

3. When the user right clicks on the workflow action item, the approve / reject button should not be visible

4. Data listed in the Subject & ID fields of the  worklist.

Thanks for your feedback & advice in advance

Regards

Darpan