Adjusting zInventory for Non-Sales Items through Vertical zCRM

I am using zInventory with my Vertical CRM. I need to track inventory, not just for saleable goods but also the inventory of maintenance parts/tooling that will be used only in house. So not really a good or a service.

So my questions is two-fold.

1. How do you remove add/back items from inventory without selling/purchasing. I know in zInventory, you can make adjustments, but to use that every time a maintenance technician uses parts seems like more than what it's designed for. I think it is for the occasional adjustment of quantity or value.

2. If using adjustments is the best way, what is the best method to do that from within the CRM? Custom Function, Extension, Widget? Just want to get some input before moving forward trying to get this thing working.

USE CASE:

A piece of equipment breaks and a Work Order is issued from Maintenance. A Maintenance Tech goes to repair the equipment and uses a box of wire nuts, two fuses and a .5" bolt.

He adds his time and these items to the maintenance work order through the vertical app.

This should reduce the quantity in stock. And if he doesn't use everything, should issue a "put back" which increases the quantity in stock.

Should I use Adjustments or some other idea?