If you ever need to know how to edit a .conf file there's a way for you to find out for yourself. Type in:
obviously the * is the name of the .conf file you want to edit.
Also, if you use -help on man you'd learn that
man -K whatever you are looking for
will search your files for the manual files you need.
I know, it's reading, but at least you don't want to configure samba. Such long manual files....