Duplicate_hierarchy_depth / duplicate_register

According to timing recommendations I am trying to manually duplicate logic using either

set_instance_assignment -name duplicate_hierarchy_depth  reg level

or

set_instance_assignment -name duplicate_register reg level

according to AN-1016 section 4.2.4.2.

But, Quartus Prime 25.1 Lite complains that duplicate_hierarchy_depth is an illegal assignment. duplicate_register seems to be ignored by Quartus and I cannot find either of them in the Assignment Editor.

Any suggestions to what I am doing wrong?