It’s more a question of either or, so you can choose. Both the Management 3.0 Foundation Workshop as well as the Agility in HR (ICP-AHR) Workshop by Management 3.0 lasts two days. Both are based on the same principles and include mainly the same content.
The difference is, the Agility in HR Workshop is crafted with HR people in mind and you can get an additional certification: The ICAgile certification (ICP-AHR).