after I disable the “usable” in qb-core items config, non ambulance person still able to use the first aid by double click and revive people (not 100% success but could work if try a few times)…
I checked the qb-ambulance code had the checking code to unable this action and ban such players, but seems not working…
If you’ve put the item on sale, players can buy it. You can put the item to certain jobs as in the picture. Only people with this job will be able to buy it.
This is an example (here is the rescue kit I use on my server)