Add days from master date field to another date field

[TomKoza]

Hi all,

Beginner here. I'm trying to add 6 days to a date field "Date1" from another referenced field "Master Date".

The results I'm looking for is when the data is entered on the master date field, date 1 will automatically be populated with the that master date + 6.

Can someone help me with the correct syntax?

[try67]

What's the format of both fields?