Hide tab for appraisal document in Portal

Dear Experts,

We have received request to hide certain tab in appraisal document from display in portal. We have tried several method as below :

1) ZHPM_COL_ACCESS

From this, we managed to hide certain field but the tab still appear in appraisal document

2) Tcode HAP_TAB_CONF

This tcode use to arrange tab display but not able to hide.

Appreciate if you could share with me possible solution for us. Thanks in advance for your kind assistance.

Thanks,

Khairul