Sound groups/engaged around

Any idea what is "sound groups" here?

Can you please explain "engaged around" in other words?

IS AUTISM A FRIEND WITH AGILE?Agile Methodologies are of importance in IT business. They help in constructing custom programming arrangements through emphasis. Also, their importance is useful in hastening the manufacturing, dissection of processes, and performing necessary adjustments. However, at its centre, Agile isn't about programming, frameworks, or business by any stretch of the imagination - it's about individuals. All its prescribed procedures are engaged around advancing sound groups, a culture of development, and critical thinking through iterative learning.