A Sample Form image is attached, with a Calendar Control and with two Combo Boxes for full/half day and inside/outside options.
The Calendar control can be inserted from the ActiveX Controls Button and you need a one line VBA program to insert the selected date into the Date Field: say myDate. Sample Code is given below:
Code:
Private Sub Calendar1_Click()
Me![myDate] = Me.Calendar1.Value
End Sub
You cannot use Check Boxes for full/half day or inside/outside cases because the returned values from checkboxes are TRUE/FALSE (-1/0). Combo Boxes can be set with required values.
For details on Multiselection of Listbox items search the term MULTISELECT in Access Help.