Sub ID is a tracking parameter, which reflects the publisher in different verticals and shows where the publisher's traffic comes from.
Sub IDs are created automatically in PX platform when leads are inserted. However, if you need to edit publisher's sub ID, go to Admin -> Publishers, find the desired publisher and click Action -> Manage Sub IDs:
On Sub IDs Management page, find the desired sub ID and click Edit:
A new page appears, including three sections similar to Publisher Settings, with an additional No Parent Inherit field.
By default, leads are inserted with No Parent Inherit set to No, which means that publisher settings (Margin, Min Price, Escore Check Percentage, etc.) are inherited by its sub IDs. If you want changes in publisher settings not to be applied to all sub IDs, set No Parent Inherit to Yes and click Save.
Ping post settings of the publisher are always applied to all their sub IDs , no matter what is set for No parent Inherit option.