Configuring the My request view
Where are you?
How to get there
Basic configuration
Additional request fields, search fields, csv export and sorting
If you enabled module based design for the Requests page, you need to edit page (e.g. menu → all requests), and then edit the module.
Otherwise click Edit, in the right bottom of the request list. Then you will see the options available.
Next, please read here, for a more detailed documentation.