Labor Rates Categories

Can you please allow the ability to group or at the very least rearange the Billing Roles and Work Types. I would like to have a group of On-site support rates/work types or a group of travel rates/work types. So that it is easier to keep track of what is made. Currently the list is by order of what I put in and our work types are so long its easy to miss what has been entered already/ hard to easily visualize all the rates for a specific work type.