Have you ever tried setting up a Gender or Age widget, but could not find which dimension or report type to use? If that's the case, here are the steps on how to set it up.

Step 1. Add a table widget to the report from the "Charts" section:

​

Step 2. Change the report type to "Gender view" or "Age range view". Add or change the dimension to "Gender" (if you chose Gender view report type) or "Age range" (if you chose Age range view report type):
​

Afterwards, you will get a widget that shows either the Age or Gender view and looks something like this:

​