Go to Admin Tools > Select your template > advanced Options > Don't display the subject's Manager and HR rep by default as potential participants.
Prevents the subject's manager and HR representative from automatically appearing in the participant list on the form.
By default, SuccessFactors automatically displays the subject's manager and HR representative as suggested participants.
When you select this option, you're turning off the suggested-user feature for this form. Your users must manually add all the participants they want to include. You might want to select this option if your company doesn't usually include the manager or HR representative in 360 reviews.
KBA , sf 360 manage templates , LOD-SF-PLT , Foundational Capabilities & Tools , Problem
SAP SuccessFactors HCM Core all versions