Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Show Motion Clip Ghosts
ID_MT_TAG_SHOWGHOSTS
Parameter: Show Summary Path
ID_MT_TAG_SHOWPATH
Parameter: Rotation Mixing
ID_MT_TAG_RMIXING
Parameter: Add
ID_MT_TAG_ADD
Parameter: Collapse
ID_MT_TAG_COLLAPSE
Parameter: Open in TL
ID_MT_TAG_OPENINTL
Parameter: Rename
ID_MT_TAG_RENAME
Parameter: Delete
ID_MT_TAG_DEL
Parameter: Duplicate
ID_MT_TAG_DUPLICATE
Parameter: Set to Zero
ID_MT_TAG_ZERO