HR P&F: Display Table in FPM and value from Z Generic class

Dear Experts

I've a requirement to develop a form for HR Admin to display the list of questionnaires in table format with choice of answer. The question and choice is stored in custom table.

I've created a custom back-end class(Z Generic Service) to read a custom table and display the question in row-wise using LIST(FPM_LIST_UIBB_ATS) form. I read several blog written by Christopher Solomon  but still couldn't able to figure out to display data in table format.

Following are the list of question which I kindly need your assistance

a) How to define field name in Back-end service class meaning naming conversion

b) How to built table entries with multiple row in DO_OPERATION method to pass it to table

c) How to set default default value determination for the field in HRASR_DT simialar to line item display from IT0008 (0008(0)-LGART)

I highly appreciate if any one can help me to resolve the above issue

Thanks

Babu.K