Hi,
Prompts are combined to display only if the user question and the datatype are the same.
In your case this is the case.
So I suggest that you create the 2 prompts like this:
@select cal.yr IN @prompt('enter the values of year','A','cal.yr',multi,free)
@select cal.qtr IN @prompt('enter the values of quarter','A','cal.qtr',multi,free)
Regards,
Didier