This calendar shoes dates from the Pick up
You can select a filter to the kind and amount of dates on the status property. This properties will be saved for each user separately.
Right from the date is a plus symbol to create a new record.
When dates are displayed and You move the mouse pointer over the record a window is displayed with the details of this record. In this window You can also find some buttons to manipulate the record.
When dates exists for a day a sum of the values for this day will be displayed left from the plus symbol.