Feat: candidate assignments

[zangfang-111]

Summary

• Completed Candidate Assessment

Type of change

• New feature (non-breaking change which adds functionality)
• Issues Fix

How Has This Been Tested?

• Manual Test
• Unit Test
• E2E Test

Checklist:

• I have given this PR a descriptive title.
• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have commented on my code, particularly in hard-to-understand areas.
• My changes generate no new warnings.
• I have checked my code and corrected any misspellings.