Muhammad wants to promote hats and shirts from the same brand, and decides to subdivide his “All products” product group. He first uses the attribute brand to select products for the brand and then uses the attribute category to create separate product groups for hats and shirts. His next step is to:

check his conversion window settings and see if new product groups create changes
check the benchmark cost-per-click (CPC) of his hats and shirts to inform his bid strategy
use the Bid Simulator, but only for “Everything else in ‘All products’”
set bids for his new product groups to align with his sales strategy