A. Create an Approver and Approval Rule record for each user. On each Approval Rule, reference the same Approval Chain and Approval Conditions, and assign a unique Approval Step for each Approval Rule.
B. Create an Approver record for each user, and a single Approval Rule record related to one of the Approvers. Using the Next Approver lookup field, sequence each Approver record to form a chain.
C. Create an Approver and Approval Rule record for each user. Set the Parallel checkbox to true and Approval Step 1 for each rule, then add all rules to the same Approval Chain.
D. Create an Approver record related to the Approval Rule, and reference a Group ID for the users who will be involved. Set the unanimous checkbox to False on the Approver record.