In which volume of ISO 26262 does the tester find requirements and recommendations for test-...

According to the ISTQB Certified Tester, Automotive Software Tester (CT-AUT) Study Guide, the requirements and recommendations for test- and verification-specific aspects of the SOFTWARE level can be found in Volume 6 (ISO 26262-6) of ISO 26262. This volume outlines specific requirements for the software lifecycle, verification, and validation activities. Additionally, it contains general requirements for test documentation and test case design.