Calculated fields - Dates

[Beth_Cl]

Please could somebody assist me with the correct expression for a calculated custom field. I'd like to create a new field that show a date to be -20 days before an existing field. Existing field being...

{DE:Deployment Date}

Any advice welcome

[Sarah_N · Accepted solution]

Try this in the calculated field.

ADDDAYS({DE:Deployment Date},-20)

Hope it works!

[Beth_Cl]

That worked, thank you! Much appreciated