Implementing Assignment-Level Security in HCM - How to implement the query

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Hello everyone,
we would need to insert a higher level of security on the assignment for an HR based on the AOR. For example, we need that if an employee has 1 assignment and then makes a global transfer to another company, the HR does not display the details relating to the previous assignment. Regarding this case, we found a post:

Product Paper: Implementing Assignment-Level Security in HCM — Cloud Customer Connect

this post contains a series of documents, including one in particular where it explains that to increase this level of security a query must be inserted (see attached screen)