Why is libre office writer not converting quotes to smart quotes

I am using Libre Office Writer for typing in Punjabi.It is not converting quotes into smart quotes.I have selected the option to do this in auto-correct options.Also there is no option to change the font for quotes,it is always Times New Roman.It does not do it even after selecting text and applying auto-correct.Please help me.

The same question as: How do I convert straight quotes to typographic quotes?