UI Sprite Atlasing -- Assets/Create Sprite Atlas is not available in the Editor Menu

Hi,

In the Unity Learn Tutorial on UI Sprite Atlasing: https://learn.unity.com/tutorial/ui-sprite-atlasing/?tab=live#, as well as in the documentation on Sprite Atlas Workflow: https://docs.unity3d.com/Manual/SpriteAtlasWorkflow.html#createAtlas the instructions are simple:
1. Enable Sprite Packer inside Project Settings
2. Click on Assets/Create Sprite Atlas to create a Sprite Atlas

I did #1 (Aways Enabled mode), but there's no "Create Sprite Atlas" item in the Assets menu.

I run Windows 10 and initially had Unity 2020.3.21 (LTS), which I updated to 2020.3.25 (LTS) hoping that it might solve the problem, but it didn't.

I'd appreciate any pointers to find a solution.

Thanks!

 

Solved it myself.

Apparently, you need to import the "2D Sprite" package from the Unity Registry.

I had seen this before, but I was a bit confused with the description in the Package Manager "Use Unity Sprite Editor Window to create and edit Sprite asset properties like pivot, borders and Physics shape", since I didn't want to create or edit any Sprite properties (pivot, borders and Physics shape).

However, the documentation is more clear "Use Unity’s Sprite Editor to create and edit Sprite assets."

So, after installing the "2D Sprite" package, the Create Sprite Atlas was available in the menu.