Attachments should be whatever Ken sends to new members.
For now, I've attached a document that NCAR uses (prepared at the request of NSF and our panel).
Instructions for Research submissions (which the XRAC reviews) are detailed at https://portal.xsede.org/allocations/research
Using XRAS Review
Instructions for using XRAS Review are provided in the Help documentation — https://xras-review.xsede.org/help