Why can’t I view my team’s plans after signing in as the participant manager in Incentive Compensation?

You must ensure that the predefined Incentive Compensation manager role is added to the custom Incentive Compensation manager role.

See Common Errors for Oracle Fusion Incentive Compensation Security Roles (Document ID 2079980.1) and How to Create Provisioning Rules for Incentive Compensation Users to Auto Assign Security Roles (Document ID 2080022.1) available at Oracle Support for details.