Month Combo Box

[Loony22]

In my employee working trace form there is month combo box (mm/yyyy) which filters working dates. When inserting a new working date, I would like that instead of the users writing full dates (d/mm/yyyy), they will only choose the day in the month. The month will be filled out automatically.

For example: CmbMonth = 01/2003

Day Start End
01 10:00 12:00
03 12:00 14:00

If anyone has an idea, please tell me.