is it possible to select annotations so that they can be selected and deleted as a group?

Using file base javascript I have creaded some anotations, including a stamp, which becomes an anotation, I want to group them so that they can be selected as a group and deleted in case the user changes his/her mind. I dont know now to do this or if it can be done. In my code I place a stamp and then I create a line and circle. I want them to act as a unit. Thanks.