I am trying to add notes/comments above the column section but dint find any way (did by adding template but that showing below to the column section) requirement is to show the comments/notes above the column section with color preference and font. Should i use CSS for this?
I'm not sure exactly what you are looking for, but each table column has a header. That header has a label. That label defaults to the Salesforce field label. You can override this in Skuid, however, and change the column header to whatever you want. So, you should be able to add brief notes in the custom header.