No matter how hard I try, I just never remember where the Symmetry option is hiding in ZBrush. At least I remember this website, so when I search here next time, this post should come up.
Which tells us that Symmetry in ZBrush is in the Transform Menu.
![](https://www.versluis.com/wp-content/uploads/2019/01/Screen-Shot-2019-01-02-at-11.43.39.png)
Here’s a link to the official documentation, explaining more intricate details on how it works.