Most requested feature of Acumatica: DAC Schema browser. More information about requesters are here: https://feedback.acumatica.com/ideas/ACU-I-639
If you want simplest possible way of usage, download DACSchemaBrowserAllInPackage.zip file. Here is the url for it: https://github.com/YuriyZaletskyy/DacSchemaBrowser/blob/master/DACSchemaBrowserAllInPackage.zip