I have an approval process for an Opportunity record that requires unanimous approval for a Department review step from up to 6 approvers. The approvers are configured as 6 custom lookup fields called Related User fields. The issue is I have is that some Opportunities do not require all 6 approvers. Hence the lookup is left blank for those that are not required. It appears the Approval process requires all 6 approvers even though some of the related user lookup fields are left blank as certain approvals just are not needed for that Opportunity.
How can I get around this issue?