How to modify an ionic application - after putting it on google play?

Question

Google Play

Good afternoon, tell me how to add, remove (modify) the application if you put it on google play. Following the instructions at site https://ionicframework.com/docs/guide/publishing.html (the first two paragraphs) I deleted the console, signed it, etc., and now I'm thinking of posting it, but I need to finish it in the future. How can I do this I can not find information, poke your nose please