This document assembles guidance and instructions to support StEER members participating in Virtual Assessment Structural Teams (VASTs) and should be at minimum reviewed by all Level 1 StEER members, as participation in VASTs is the primary mechanism by which StEER members elevate to Level 2 status eligible to deploy to conduct field assessments. This document specifically guides VAST members in their process of activation for authorship of StEER event reports. This handbook and other materials to support VASTs in this and other functions within StEER are archived in the Resources folder on the StEER Members Shared Drive on Google. In addition to this document, StEER will be releasing online modules and conducting webinars to assist in training VAST members. These will be available at https://www.steer.network/resources.