In order to view individual forms and schedules, you need to use Forms Mode, which is only available in the desktop (installed) versions of TurboTax (not supported in the online versions).
For capital gains adjustments, you need to enter a code on Form 8949 (specifically, Code N for nominee).
See https://www.irs.gov/instructions/i8949#en_US_2021_publink59421zd0e1936
