Genealogy / Polish nobility (szlachta) in Kamieniec Podolski? [4]

Hello everybody, my great-grandmother was part of the Polish szlachta in Kamieniec Podolski. This city is now Ukrainian territory but I wanted to know if anybody knows what the Polish szlachta in Kamieniec Podolski did for the Polish people, are they are different from szlachta members in other parts of Poland, and if anyone else had szlachta relatives around Kamieniec Podolski. Wikipedia is very muddy on the lifestyle of the szlachta in eastern Poland. I also have relatives in Ukraine with documents proving her nobility if that is important. Thanks.