The arrangements relating to administrative support for the IETF (referred to as the "IETF Administrative Support Activity" (IASA) [RFC4071]) were created more than ten years ago, when the IETF initially took charge of its own administration. The arrangements have served the IETF reasonably well, but there have been considerable changes in the size and scope of the IASA work, in the world around the IETF, and in the IETF community's own expectations since the creation of IASA. As documented in [draft-haberman-iasa20dt-recs], the current administrative arrangements are facing a number of challenges. The range of IETF administrative tasks have grown considerably; the IASA organizational structure is not as clear, efficient, or as fully resourced as it should be; the division of responsibilities between the IETF and ISOC continues to evolve; expectations about transparency have changed; and the IETF faces continued challenges related to funding IETF activities against a backdrop of increasing costs and lack of predictability in our funding streams. In November 2016, the IETF Chair launched a project in the community to re-assess the IETF's administrative arrangements. Since then, the IETF community has discussed the challenges we face, the properties we expect from future arrangements, options for the legal structure of future arrangements, and options for the organizational structure of future arrangements. For legal purposes, IASA is currently organized as an activity of ISOC. Among multiple legal structure options that were considered by the IETF community, a new limited liability corporation (LLC) that is a disregarded entity of ISOC (i.e., it is treated as a branch or division of ISOC for tax purposes) will be created to house the administration of the IETF. ISOC supports this plan. This working group is chartered to document the normative changes to IETF administrative structures and processes necessary to effectuate this change. The main deliverable will be a document that obsoletes RFC 4071. The working group will produce other supporting documents as necessary to achieve its charter objective. In parallel, the legal documents necessary to establish the LLC will be developed outside the working group with the support of legal counsel. These documents will not be products of the working group, but this working group will be the venue where these documents will be presented to the IETF community for review and discussion before they are finalized. Aside from instances where they presently relate to IASA, it is outside the scope of this working group to consider any changes to anything related to the oversight or steering of the standards process as currently conducted by the IESG and IAB, the appeal chain, the confirming bodies for existing IETF and IAB appointments, the IRTF, or ISOC's memberships in other organizations.