How to mount an OLED display on a panel?

Maybe a trivial question, but not so much...

I have finished testing my project, which includes a 128x64 OLED display, and now I have built the enclosure box when I met an issue: how to fix the OLED to the panel? I have cut the "window" for it, but now I have no idea on how to fix it.

I have thought about glueing it, but it is not easy as it moves around when you try to take the correct positioning.

Has anyone met this problem and how are you fixing it?

Thanks
Fabio

I use hot-melt glue, the glue guns are cheap. Hold the display in the correct place and add spots of the glue to the back of the display to tack each corner to the case.

Thank you! I'll try that.