The views and default columns can only be set by admin users. However, views already set up can be swapped between by all users.
1. Open any quotation, job/order, etc. and scroll down to the items
2. Click 'Screen Options'
3. Click on the settings/cogs icon
4. To add a new view set, click on the plus button
5. Give the view set a name
6. Click "Save"
7. Hide or show columns for this column view set
8. When you have made all your changes, click "Save"
9. Click "Close"
10. To switch between the view sets, click here
11. Select the desired view