I'm not sure about doing it through the task menu.  I would create a custom class that extends %SYS.Task.Definition and then overwrite the OnTask method with whatever custom code you want to run. For example, if you wanted to export your Business Partners to a daily file for some reason.  You could use the method below to always pull the current date.  Once you have the new class built it will be selectable in the Task Type drop down.

Method OnTask() As %Status
    {
        set tCurDate = $ZDATE($H,8)
        do ##class(Ens.Config.BusinessParnter).%ExportAll("C:\TEST\"_tCurDate_"BusinessParnters.xml")
        Quit $$$OK
    }