In the compact layout assignments, If you want to edit the management settings for an object, go to Compact Layouts. Click Compact Layout Assignment. Select a compact layout to use as the primary compact layout for this object. In the Record Type Overrides section, select one or more record types to that you want to assign a compact layout to. If you don’t have any record types set for the object, you won’t see this section. If you don’t set any record type overrides, all record types will use the object’s primary compact layout by default.