When creating a new ECN, how to make the wtpart search and selection on the associated page

I am using Windchill PDMLink Release 11.0 and Datecode with CPS M030

The Select Associations page lacks some functions (3 buttons for Paste, Paste Selection and Add Associations are missing, and searching and adding items by number or name is missing)

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选择关联页面缺少部分功能（粘贴、粘贴选择内容、添加关联的更改 3个按钮缺失，按编号、名称搜索添加条目缺失）