Need to find a date and if fount replace and if not make new line

Hello,

I have a problem with finding a code,

I have a sheet (call "Blad") with a date in "F2" and in A5:A8 information

nou i whant the second sheet ("data") in this sheet is the first colum the dates en de 2nd till 7th the information

now i whant if the date in F2 the same is as in the data sheet he replace the information behind that date
if the date is not exist he must make a new line

hope someone can help me thanks