how do I add new parts to an existing BOM??

Hey Guys,

I have several drawings that I am revising that have existing BOMS that have external links etc to the parts / assemblies that are called up.

Now I have added a few parts to this overall assembly as well as assemblies and I would like to add these parts / and assemblies to the existing BOM and also add teh external links to those items so that the Balloon feature will also follow any changes made...

How do I add new parts to the existing BOM and add that external link at the same time???

all help appreciated!

SolidworksBill Of Materials