The LEAST effective way for a family to support a job seeker in obtaining competitive employment is to attend job interviews and new employer orientation sessions to learn more about the job and hiring procedures.
This is because it may interfere with the job seeker's autonomy, self-determination, and self-advocacy skills, which are essential for successful employment outcomes. It may also create a negative impression on the employer, who may perceive the job seeker as dependent, unprepared, or lacking confidence. Furthermore, it may violate the confidentiality and privacy of the job seeker, who may not want to disclose personal information to the family or the employer. Therefore, the family should respect the job seeker's choices and preferences, and support them from a distance, unless the job seeker explicitly requests their presence or assistance. References:
APSE CESP Practice Exam, Question 3
APSE CESP Exam Content Outline, Domain 2, Task 2.2
APSE CESP Code of Conduct, Principle 1, Section 1.3
APSE CESP Handbook, Page 12, Section 4.1.3

Focusing on a job-seeker's vision of their future is a component of person-centered planning. Person-centered planning is a process for selecting and organizing the services and supports that an individual may need to live and work in the community. It is a process that is directed by the person who receives the support, and that reflects their preferences, strengths, and goals1. Person-centered planning helps the job-seeker to identify their desired outcomes, and to develop a plan to achieve them with the help of a team of people who care about them2. Person-centered planning is based on the values of self-determination, inclusion, and empowerment3.
Task analysis, systematic instruction, and people-first language are not components of person-centered planning, but rather methods or strategies that can be used to support the person in their employment journey. Task analysis is the method of breaking down a complex task into smaller and simpler steps, and teaching them in a sequential order4. Systematic instruction is the method of providing clear and consistent cues, prompts, feedback, and reinforcement to help the person learn and perform a task5. People-first language is the way of communicating that respects the person as an individual, and avoids labels or stereotypes based on their disability6. References:
Person Centered Planning | ACL Administration for Community Living
Person-Centered Planning - National Parent Center on Transition and Employment What is Person-Centered Planning? - University of Florida Task Analysis - Association of People Supporting Employment First Systematic Instruction - Association of People Supporting Employment First People First Language - Association of People Supporting Employment First