Remark update in another sheet

Hi,

I have customer database in "data"sheet ( will be hide for user ).and second sheet as "form" which get same data in different format from "data"sheet by using offset formula and linked with scroll bar button to get next record.

user will update the 1st /2nd/3rd remark in B20/B21 & B22 in "form" sheet which should be copy in "data" sheet against particular row in colomn Z / AA & AB respectively.

after click on the next scroll button for next record again remark colomn should be blank for new updation for next record.

attached sample file for your ref. Pls help.