Use one button to auto-fill three fields from previous record
I know that I can easily set up a button to auto-fill a single field with data copied from the last visited record - I'd like to extend that to auto-fill three fields, though.
The three fields are for the users to enter the date they collected their data. Because of how our data is formatted and stored, it needs to be broken up into three separate YYYY, MM, DD fields, so using the auto-date thingy isn't really practical (that, and the date they gathered the data may not be the date they're entering it onto the form).
Large swaths of the data they enter are going to belong to the same date group, though, so I thought it might be helpful for them to be able to just tap one button on the iPad to auto-fill the same date as the last record, until they need to make a date change for whatever reason.
So, lengthy and probably unnecessary description aside, how would I make one button fill out three fields with the values from the last record?