Ask-a-Dave's-Gardener: ID help and care advice plz, 2 by Wenroo

Wenroo wrote:
Hi, I have what I think is a Schefflera Umprella Tree that has happily grown Very tall (guessing 8ft) outside this summer. I need to bring it in soon because a frost is coming but it\'s too tall so I need to trim it but everything I have found, if my ID guess is right, doesn\'t make sense. There aren\'t any side branches... its just one main trunk with stems coming off.... I don\'t want to break it trying to bring it in and I don\'t want to kill it by just cutting off the top. ASAP help needed! Thanks!