how to put a object in blender in focus? Viewport focused on the Selected Object how to put a object in blender in focus? Viewport focused on the Selected Object

i click on emultating mouse pad, saved changes. everything works besides the "period" to focus, idk what im doing wrong

https://www.youtube.com/watch?v=JYj6e-72RDs
10:13-10:38

can anybody help me?
Are you hitting period on the number pad? If your keyboard doesn't have a numpad this thread may be useful in remapping the key:

Emulated Numpad Mapping - Numpad Period?