If you set the Extended Group Call Pickup field on the Feature-Related System Parameters screen to flexible, the system displays the Extended Group Number field on the Pickup Group screen.
Important:
If you change your system from simple to flexible extended pickup groups, see Extended pickup groups, the system automatically populates the Extended Group Number field on the Pickup Group screen for each pickup group member. For example, if pickup groups 13 and 14 are members of extended pickup group 4 and you change the system from simple to flexible extended pickup groups, the system automatically populates the Extended Group Number field to 4 on the Pickup Group screen for these two pickup groups. You are not required to keep the number that the system automatically populates in the Extended Group Number field. You can change the number in the Extended Group Number field to another pickup group number. You can also make the field blank.