I have been asked about this before and yes, it is by design. Use the following steps if you have an Amicus Attorney V client system / user that is unable to delete items from their own calendar. Open Amicus and go to File -> Preferences. Click on the Calendar tab and then click on the Display sub tab. At the bottom of this tab you can adjust the settings to your personal preferences. In most cases is is sufficient enough to just uncheck the box labelled “Calendar pages cannot be altered once they are more than xx days old.”
–himuraken