Need to combine 2 fields together

Need to combine 2 fields together

Hi,

I am trying to merge a date (Start_Date) and a time (Start_Time) field into 1 field (Start_Date_Time).

I need there to be a soft return between the Date and Time in the combined field. So, first, what kind of field do I use? I am using a multi-line field so I can create the soft return in the field.

Any help would be appreciated.

Thanks!

Trish