I want to customize the events of the field, however I found that in the place that is not set in the new version of the unified interface, we have to switch to classic mode, is that so, or is it the wrong place I'm looking for?
If you have to switch to Classic mode to set it, will Classic mode still work after you force it to switch to Unified Interface on October 1, or will Unified Interface also have the function of custom field events at that time?

