Michael for example. If you did fire restoration. You could have a Bathroom, and a Kitchen Macro. In the bathroom macro you would have line items such as, clean shower, clean vanity, clean floor, clean walls and ceiling, clean toilet, clean door opening, cleaning door, ect ect.
You could also do one for water damage; service call, equipment setup monitoring and take down, extraction, content manipulation, air movers, dehus, antimicrobial, detach carpet, remove and replace pad, reinstall carpet, remove and replace baseboards, ect ect.
It would be a simple click on the macro, and all of this would pop up instead of having to go through the items list and finding it, and all you have to do is replace quantities, or as Richard said remove anything that isn't applicable to the job.
Its a huge time saver!!!