Do the following to change the attributes of an already existing tier:
Click on the drop down box and select the tier which attributes you want to change. Thedialog window for that tier appears.
After making the changes, click onto save them. Otherwise click to exit the window without saving.
You cant change the Parent Tier in this dialog because of possible data loss this alterations would cause. To change these settings in a safe way (i.e. creating a copy of the tier and changing this copy) see Section 2.4.4 and Section 2.4.9).