Each requisition can have its own data management technique, and the method for each must be recorded. The data management technique selected must be facially neutral, should be representative of the entire sample, and should not adversely impact any particular group. If you apply one technique, and more resumes are needed, you can apply the same or a different technique to manage the remaining applicants, so long as it is also facially neutral, representative of the entire sample, and doesn't adversely impact a particular group.