Hiding Service Items With the Ability to Add Into Parent Service Item

We have created an event scheduling service item that involves multiple stakeholders. This service item includes child service items within the request. We need to hide 3 of those service items from all service items list but keep available within the service request. 

I found this in another similar post which allows us to hide the category these three items are in, but the items are still visible in all items list.

/* Catalog: Hide LAST category in list */
#categories-list > li:last-child{
visibility: hidden;
}

My question is, is there a similar entry we can put into the style sheet, that would hide those specific service items as well in addition to the category?

Thanks much and Cheers!

-Chris