How to create custom app and customized our application version-12?

Hi Guys,

How to create custom app and customized our application ?

I Have created custom app but code file is not seen our editor also export custom field option is not visible.

Please help me.

Thanks

Have you installed custom-app on your site ? please check

How to customization custom app in version-12 ?

Please guide me.

What’s your requirement ?

How much customization in version-12? → This does not tell what you want to achieve can you be more specific what are you looking for