Create multiple pages in ionic

I would like to create a banking application using Ionic 4, first of all, I would like to show up the logo of the company for almost 5 secs, then display the other pages of the app.
How can I adjust timing for this page ?

cordova-plugin-file 6.0.1 “File”
cordova-plugin-ionic-webview 1.2.1 “cordova-plugin-ionic-webview”

Do you have the rest of the app already working?

Are you talking about the splash-screen?