you can find those key in preferences… imput tab… then… 3D view> 3D View (Global)… and find the one you want to change: Lasso Select, Border Select and Circle select…
I managed to hack a partial solution for the lasso tool by redefining a Tweak action to be “Shift RMB” and click the “deselect” option in the expand. But that still leaves the “ctrl shift lmb” default intact meaning if I ever wanted to use “ctrl shift lmb” for something else I would not be able to.
Hello… Sorry I didn’t answer you… I thought I was going to receive an email if someone posted something…
So… the border select option does not have a “deselect” option visible but… if you look down there is a sublist that says “border gestures”… in there you can add or replace one of the options to deselect something… for example mine is set to “deselect/Mouse/ alt Left Mouse”…
I hope that help you… Im a 3ds max user and Im used to work with a lot of shortcuts… so I tried to make blender behave like blender… now I can work with both apps and feel them more or less the same.