Agree on authorship and contributions before a collaboration

Help me set up an authorship and contribution agreement for a collaborative research project. Project and planned outputs: [e.g. "2 papers and a dataset"] Collaborators and expected roles: [NAMES or roles, career stage, institutions] Field norms: [e.g. "first and last author matter", "alphabetical order", "large consortium"] Journal or institutional policy: [e.g. "ICMJE criteria", or "unknown"] Known sensitivities: [e.g. "a student and a postdoc both want first author", "data provider expects authorship"] Draft: 1. The authorship criteria we will use (e.g. ICMJE or field equivalent), explained in plain terms, and who qualifies for acknowledgment instead. 2. A contributions table using the CRediT taxonomy (conceptualization, methodology, software, formal analysis, investigation, data curation, writing - original draft, review and editing, supervision, funding acquisition, etc.) with each person's expected role and level. 3. Proposed author order for each output, with the reasoning. 4. Rules for change: what happens if contributions shift, someone leaves, or new people join, and when we revisit (e.g. at each draft milestone). 5. A dispute process, including who to involve (e.g. research integrity office). Return the agreement as a 1-2 page document plus a short, friendly email to propose it to collaborators. Note that institutional policies take precedence and should be checked.