Focus Cell feature in Excel

Excel has a rather new feature called "Focus Cell." It may be in beta, but somehow it mysteriously appeared on my Mac and now it's disappeared. It makes searching very much easier, visually and is a neat new feature.

Has anyone else experienced this feature? You can check it out on YT. On a Windows machine, there is a button to toggle - that space on Excel for Mac is just blank - yet somehow I activated it and then it unactivated.

As I said, if anyone has discovered this and has an idea how to activate it again, I'm all ears!

Regards!