Divisi bracket

Currently, there is no way to add a bracket to two or more whole notes to show that those notes are in the same voice. In the attached image (which I did in Finale), I demonstrate this bracket showing the "E" and low "E" in the bass voice. I can use a bracket arppeggio to mimic this but it is on the wrong side (left) of the note and I can't flip it to be on the right side. It would nice to add a proper divisi bracket or a way to draw custom symbols and save in a palette.