Here is a cool tip. NASCAR pit crews glue lug nuts to wheels to speed tire changes during pit stops. We applied this to carbide inserts. Use small rare earth magnets to hold the insert and a replacement screw. The inserts have enough magnetic material in their substrate to hold them in place, but the steel insert screw will hold both securely. You probably should replace inserts screws more often than you do (have you ever stripped the head and everything came to a halt?), but here you can at least alternate them and inspect them while the machine runs. It is easy to grab the insert/screw and pull it away from the magnet and you are ready to reload.
Milling tools can be removed from the ATC to change inserts if you have redundant assemblies, but turning toolholders and boring bars usually stay in the turret so changing inserts is serious downtime. We actually devised this for a customer who's machinists were often not using the second edge of the insert, doubling their tooling cost. They used a Dremel grinder to break off any built up edge and a Sharpie to mark the used edge. Then they could stage the next index with the magnets.
Sharing information about high performance milling technologies, the result of 30 years of research.