How do you use GNSS guidance on IR weaponry?

Im trying to use the new SPICE 1000 bombs on the F16s and i want to drop them with GNSS, is that possible?

also is it just me or am i unable to remove a lock with the “Weapon Lock (Air-to-Ground)” keybind?

I think u can just point and throw maybe u can choose target point of map and throw I use it this way in kh38ml idk have spice

yea i know how to use GNSS guidance with laser ordinance but i dont know how to use it for IR ordinance like the 38MT and SPICE