P: Apply Presets from inside a mask (Aplicar ajustes prestablecidos a mascaras en LR)

Typically, Adobe and third party presets cannot be updated by design.

Hi, i can't update the preset, but it work creating a new one, thanks for the tips

Por ejemplo, yo selecciono una máscara del fondo de una fotografía y quiero aplicar el ajuste Kodak T-Max 400... que sólo se aplique a la máscara del fondo. ¿Es posible? ¿Cómo se hace?

This thread from a few days back might give you some ideas as to how you can go about creating your own 'mask based' presets based on existing non-mask presets.

https://community.adobe.com/t5/lightroom-classic-ideas/p-link-existing-presets-to-new-ai-masking-automatically/idi-p/13369759

@Rikk Flohr: Photography can this thread be merged with the one I mention above?

Gracias por su respuesta. Desconocía que esos ajustes eran adaptables. Yo propongo que en una futura actualización de LR hagan que sirvan todos los ajustes a las máscaras. 

Any preset identified as 'Adaptive' (i.e. 'Adaptable' in your list) will create a mask and in built edits applied to that area only. The built-in edits can be adjusted to taste. Below is a list of all the curently available 'Adaptive Presets'. It's also fairly easy to create your own based on these.

Gracias por la respuesta. Me refiero a los "ajustes prestablecidos" que aparecen en el menú de la izquierda. Esos ajustes se aplican a toda la fotografía, no a la máscara seleccionada.

'Presets' and 'Effects' can already be applied to masks. There are are presets with built in AI masks (i.e. Adaptive presets), and you can even build your own presets incorpating masks with adjustments. 

If above is not what you're requesting, then maybe you could spend little more time describing exactly what you're requesting.