可以快速直接做多个图层的父子链接动作，设置链接条件，添加空物体作为主图层等

Layer Sitter makes managing parented layers easy.

Quickly parent selected layers using a filterable list, by creating new customized nulls, or using Quick Parents.

支持的AE版本：

AE CC 2018, CC 2017, CC 2015.3, CC 2015, CC 2014, CC, CS6,中文版/英文版AE

AE脚本安装:

拷贝jsx脚本文件到Support Files\Scripts\ScriptUI Panels