How to make certain columns editable

I want to make certain columns editable only. Currently when I click on a row , all the cells are editable. I want to make only certain cells editable. How can I do that?

Thanks

Please, try to use onEditCell event. For example:
grid.attachEvent(“onEditCell”, function(stage,rId,cInd,nValue,oValue){
if(stage==0&&cInd==2){
return false
}
else{return true}
});

Also you may try to use read-only column types to block the edit of the column (“ro” type)