Add shortcode

I would like to add this shortcode:
[feather_share]
in ad page layout.

I have tried to write this:
$ feather_share_name_srccode
or this
feather_share_name_srccode

not good.

I do not understand how to be code.

I understood that the code must be \ $ somecodetitle
but I do not understand what it means.

I tried a lot, I did not find the solution, or I can not understand.

Thanks for help.

https://ww.wp.xz.cn/plugins/another-wordpress-classifieds-plugin/