Multisite (noBpres) Marketpress Gridmarket Blog Templates.

Multisite (noBpres)
Marketpress
Gridmarket
Blog Templates.
Custompress.

Adding required custom taxon and custom fields..

Where specifically do I "embed the php" code to allow for "futureproofing" and all subsites to display products in the same manner..?

Gridmarket being the child theme that is used across the board..

Getting ready to go live with this site. down to the last few issues..