Hi @ChuanYanF ,

The access to workspace lists is managed in sys_ux_applicability_m2m_list table.

For your use case, it's better to create Page Variants for specific set of users based on their roles.

create a variant of the page you want to differ and apply audiences to it (audiences work the same as user criteria and can even reference them). Put the order for the variants in the correct way, so you have the variant with the 'lowest' role last, since users with 'higher' roles, probably also have the 'lower' ones.

Also, refer to this solution : https://www.servicenow.com/community/grc-forum/audit-workspace-how-to-set-audience-by-user-group-to-...