... and use it?
I’m still learning some of the details and the way you use it depends on what you are using it for (I use it to condense textures and reduce texture size prior to sending a figure to Bryce), but here’s an example of one basic set of steps I use:
In the scene tab, select the base node of a figure you want to use Texture Atlas on.
Click on the Texture Atlas’s globe icon.
Adjust width and height of the map (preview image size), if all pieces of the image should be the same size uncheck “Weight By Image Size” and press the Reset weights button, then when done press the Auto Arrange button and then the Accept button to accept the settings.
In the “commit to Figure(s)” window, press the Browse button and select a location to save the image to. Change the texture settings width and height to something big enough that detail isn’t lost when all individual textures are combined into this single large final texture. Change the Format dropdown to JPEG. Press the Accept button.