Selectors for anchor base and type into activity


I am taking a date from an excel sheet and based on that date i need to fill the some data on web portal which matches with the date in excel. But i am not getting stable selectors. Please find the below screenshots,

After clicking on ok button, we need to fill the data for the respective date in below fields, please find the sreenshots,

How to achieve this? Any quick help would be much appreciable. Thanks.

Refer the below post for reference and go through the workflow and the selectors of the click activity.

I can select the date in datepicker calender. but when for that selected date , i need to fill the data in fields which is in second screenshot. Suppose I have selected the 4th Oct 2019 in calender datepicker then for that same date , i need to fill the data in fields of second screenshot.