Hi mshalini,
Regarding inserting gamma-dot in an axis title, you can enter the following escape-sequenced
text in the Title field in the Title&Format tab in the Axis dialog box ("Format: Axis Titles" menu).
(Or, on any text label, right-click, and choose "Properties" flyout): \ad(\g(g))
or
\ad(\f:Symbol(g))
There are also other ornamental marks such as above bar(\ab) and tilde(\at).
Search the keyword "escape sequence" in the Origin help. These may not work
in some older versions.
--Hideo Fujii
OriginLab