Samba shares and rights

I have two pools (JP and Pracovni).
I set Samba to share JP as Data and Pracovni as Prace.
In this setting could not see anything in Windows. Just when you log was share home folder (grovik).
When I set Samba Export I began to see the sharing of “Prace” was it possible to read and write.
I did the same with “Data”, data began to be seen in Windows, but it was not possible to write him.