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To test the COmanage subject source (view) for Grouper browse to the Grouper UI as a privileged user (often 'GrouperSystem').
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In the UI search box (top right) enter the name of a person in the CO. Grouper should find the CO Person. Click on the user name to see the details that COmanage Registry makes available for Grouper.
Initial Reconciliation of Groups and Memberships
You can initiate the initial provisioning and reconciliation of groups and memberships from COmanage Registry to Grouper by choosing Configuration -> Provisioning Targets and then clicking 'Reprovision All' for the Grouper Provisioner instance you have configured.