Oneness Pentecostalism, as with other modalist groups, teach that the Holy Spirit is a "mode" of God, rather than a distinct or separate person in the godhead, and that the Holy Spirit is another name for God the Father.
That the Holy Spirit is a "mode" of God, rather than a distinct or separate person in the godhead, and that the Holy Spirit is another name for God the Father. This is what Oneness Pentecostalism teach.