Change the thruster pack button to throw the grenade button recon type settings . Taking Grenade with the left trigger has always been the way to go from the first Halo and classical settings such as recon , is necessary.
I’m pretty sure that was just a bug on the control selection screen and that LT is indeed grenade throw for recon
It is. Greenskull made a video when he played Halo 5 at Halofest and though the screen said LT=Thruster Pack, it was actually LT=Grenade. It was an error that I’m sure will get fixed even by the time we get the beta.