Hello there are multiple ways to do it, the first in my mind is using filter pane.
what you need to do is, put your date field in your filter pane, and then select your date range in the filter, for example, if you want to show Jan 01-03's result, you highlight these three dates in the filter.
then do export to your report.
I tested on my Qlik sense, it worked.
Another way is to use variable define your start and end date, then apply the variable in every expression in your sheet
Make use of variables in your set analysis statement and you will be able to acheive what you are looking for. Just update the variables using a qWidget or a custom extesnion. You can even make use of an input box which I have hosted on Qlikbranch:Qlik Branch