Setting a FOrmat to a Datagridview Cell

Hi ! I am trying to make a form with a datagridview which lets the user to add, edit and delete a record directly using this grid.

One of the columns is to be formatted as Time and one also as Date.
Is it possible to set a format of these cells?
For example, a user is not yet entering any data however the cell format for time displays " : : " which will guide the user on how the time should be entered. I hope u r getting me.