As mentioned in the attached document "MAPLE-B3RM_RevE_B4860Rev2_A28.pdf", page 2, DFT processing of cancelled layers can be done using eFTPE2 within PUSCH2_EDF processing chain and this is optional.
But there isn't any other information in the same document describing how to enable this. Also section 1.4.6 which describe PUSCH2_EDF, doesn't include any information about DFT processing of cancelled layers using the eFTPE2. So, how to enable this feature? is enabling this feature is mentioned in another document?