In GlassFrog v5 you can add accountabilities to the Circle Lead at the anchor level.
To add new accountabilities to the Anchor circle Circle Lead, you first need to have a member filling the role.
2/ Once you have a Circle Lead assigned for the Anchor circle, go to the Roles tab, and click on Circle Lead.
3/ Click on the pencil icon next to Accountabilities:
4/ Add any accountabilities you need in there and click on the Save button.