Edit with Calendar.
If double click on a cell with a date, the calendar will appear, you can select a date on it.
Main Window. Calendar.
Note - if you specify a date in line with the clock image - [Remind Me], then at that date each time you start the program in the lower left corner the dialog box appears, reminding of this. In this example, in the lower left corner, we see a reference to the record [Web Money]. If you click on the link in the Reminder box, then this record will be opened in the right window.