Please allow us to directly enter the tolerance for Chamfer:
The current workaround is to hover over the chamfer distance dimension to find out what the parameter name is (after you've created and OK'd the feature and gone back in to edit it), then go to Parameters and edit the tolerance there.
The following should also have this "Tolerance..." button popup window:
Shell Thickness, Draft Angle, Emboss Depth, Rib Thickness, Sweep Taper/Twist, Coil Pitch/Revolution/Taper, Pattern Angle/Number...
Basically ANY box with a dimension and the little side arrow dropdown menu should have the Tolerance... button.