PM Schedule Definition - can I add an serial controlled Asset Group (instead of a single Asset)?

Hi,

Using R12.2+ EAM.  When creating PM Schedule Definitions for serialized rebuildables, we have to specify the Asset (not just an Asset Group - and thereby have the PM Schedule Definition apply to each Asset belonging to the Asset Group) - A) do we need to have a PM Schedule for each specific serial number/Asset?

When we define an Activity we can define for an Asset Group (and by default new Assets are automatical added/covered by the Activity), would like the same for PM Schedule Definitions.

Dino