How to display custom text in the dialog based on the setup type?

[seidhkona]

I'm new to Wix and I have no experience customizing install dialogs. Currently, I am using Wix 3.11 and
don't even know which theme my installation is using right now - I'm assuming Minimal, since I don't specify it anywhere?
I do have Bundle.wxs with this setting:
<BootstrapperApplicationRef Id="WixStandardBootstrapperApplication.HyperlinkLicense">
It references my product msi, produced using Product.wsx.

I would like the dialog to be more user-friendly and display what actions are actually being performed: currently it just says Setup Progress... no matter if I'm running fresh install or upgrade. I know there's a way to customize dialogs, but I can't figure out how to display different message based on install type. I would like the dialogs to say "Upgrade" if upgrade action is being preformed, or "Repair", or "Uninstall"... Attaching some screenshots for clarification. Any detailed help will be greatly appreciated!