video: https://drive.google.com/file/d/1qnn96gvkQz9cFqGJDtE6-EbUUP-I_Oul/view?usp=sharing

.blend file: https://drive.google.com/file/d/1cxfsIRXvasJL4nldaWupl2wHCU-iOY-w/view?usp=sharing

I am trying to scale/extrude selected edges to the outside, but can't. I tried:

• S, Shift Z
• Alt + S

Nothing helps

Consider:

Video: https://drive.google.com/file/d/1qnn96gvkQz9cFqGJDtE6-EbUUP-I_Oul/view?usp=sharing

.blend file: https://drive.google.com/file/d/1cxfsIRXvasJL4nldaWupl2wHCU-iOY-w/view?usp=sharing

I am trying to scale/extrude selected edges to the outside, but I can't. I tried:

• S, Shift + Z
• Alt + S

Nothing helps.