Choose the shown tool 
to draw a flare on the upper part of the indicator.
The lowest top of the flare must be situated in the middle and that is possible to do applying the instrument
. Make the necessary corrections on its sides:
Blending
Options-Gradient Overlay
Gradient?s parameters:
to draw a flare on the upper part of the indicator. The lowest top of the flare must be situated in the middle and that is possible to do applying the instrument
. Make the necessary corrections on its sides: Blending
Gradient?s parameters: