Complex sentence: After the Los Angeles office was opened, the brand label changed to H Bar C California Ranchwear, and Seymour recruited famous rodeo tailor Nudie Cohn to begin designing shirts for the brand.
Split into simpler sentences: After the Los Angeles office was opened, the brand label changed to H Bar C California Ranchwear. After launching the LA office, Seymour recruited Nudie Cohn, the famous Rodeo Tailor to begin designing shirts for the brand.