As research teams can be formed in many different ways, it is the responsibility of proposers to clearly define the roles of those who are not co-PIs. The research will include work by undergraduate students, graduate students, and postdoctoral research associates as appropriate. Collaborators, contractors, associates, technical support, etc., are permitted, but their relevance and involvement with the proposed work and impact on the budget should be clearly defined. The Narrative Description of the Approach (4.b. in the RFP) should include the role(s) of key personnel within the research project, and the number of postdoctoral researchers and graduate students involved. The Budget Template includes fields to identify personnel roles.