AWS SDK for .NET Documentation
PlacementGroup Property
AmazonAmazon.AutoScaling.ModelCreateAutoScalingGroupRequestPlacementGroup Did this page help you?   Yes   No    Tell us about it...
Physical location of an existing cluster placement group into which you want to launch your instances. For information about cluster placement group, see Using Cluster Instances

Constraints:

Length
1 - 255
Pattern
[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Declaration Syntax
C#
public string PlacementGroup { get; set; }

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)