When well whisked, add salt, spices, bay leaf, Worcestershire sauce, and the flour mixture into the pot, cover it, and cook for about 10 minutes on high heat. After 10 minutes, add crabmeat, scallions, shrimp and reduce the heat, cooking for about 5 minutes. Stir in parsley and remove the bay leaf, stir and remove from heat. Let sit covered for 5 minutes.