First - make a note of which view you want to change:
- Setting -> Customizations -> Customize the System
- Expand Entities -> Expand Account -> select Views
- Select the view you need to change (in this case "My Active Accounts")
- Add and remove columns, set sorting and filtering as desired.
- Save and Close
- Click back on Account in the left navigation
- Publish (up top)
Refresh and you should see your changes.