Add a new Rule to the Ruleset.  Call it “Circular Representation” and give it the following text:

There is a GNDT column called “Endorsement” whose legal values are the names of all MNs. A MN is said to Endorse the MN named in that column. This represents the other MN whom that MN trusts most to uphold their interests. A MN may change their Endorsement to any valid MN as a weekly action. A MN who Endorses an invalid target (such as a MN who is ignoring this paragraph) may change their Endorsement to any other MN at any time. A MN’s Endorsement defaults to the MN immediately above them in the GNDT, with the top MN defaulting to the bottom MN.

An MN may not Endorse himself.

If a MN becomes Idle, all MNs who Endorse them have their Endorsement changed to the that of the MN who became Idle. If this would cause a MN to have an illegal Endosement value, their Endorsement is instead reset to its default value.