Ajayi is expected to have a small set of plays after being acquired from the Miami Dolphins on Tuesday.
"He's done a nice job," Pederson said Friday. "He's a smart guy. He comes from an offense that uses very similar terminology, so he's familiar with that. He's picked it up, he's had some extra meetings with [running backs coach] Duce [Staley] this week, so we're trying to get him up to speed as fast as he can and we can and he's done a nice job."