Subdivide an edge in Blender

Does anyone know how can I subdivide the white horizontal edge in the intersection with the 2 black vertical edges? I dont even how to ask that to youtube or google, I have been trying for literally 2 hours, thanks in advance Archivo adjunto 249229

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https://foro3d.com/attachment.php?attachmentid=249229

https://docs.blender.org/manual/en/4...subdivide.html
https://docs.blender.org/manual/en/2...form/move.html
https://docs.blender.org/manual/en/4...bar/blade.html

https://youtu.be/e0B-3ydsYIE

Cita:

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Iniciado por Soliman

https://docs.blender.org/manual/en/4...subdivide.html
https://docs.blender.org/manual/en/2...form/move.html
https://docs.blender.org/manual/en/4...bar/blade.html

https://youtu.be/e0B-3ydsYIE

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muchisimas gracias por la ayudaaa!!!!!!!!!!!!!!!1