Lets to set use documents in shared profile enabling sign.
PRL_RESULT PrlVmCfg_SetUseDocuments( PRL_HANDLE hVmCfg, PRL_BOOL bEnabled );
PrlApiVm.h
PRL_RESULT . Possible values:
PRL_ERR_INVALID_ARG - invalid handle was passed.
PRL_ERR_SUCCESS - function completed successfully.