Here are the steps:

• Login to Mindbody
• Click Insights, then Reports
• Run a Membership Report
• Select the Membership and Status and Generate
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• Click the Add Tag button
  
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• Click Home
• Click Clients
  
• Click Modify Tagged Client
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• You will see the #Currently Tagged Clients will show whoever they flagged from report.
• Click Update: Client Indexes
• Select Our Index (HybridAF or FaciliKey)
• Click Value = Yes
  
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• Click Update Tagged Clients