How can I start new Kotlin multiplatform mobile project in IDEA without KMM plugin (it is only for android studio)? I mean how can I generate all default files & directories for KMM project without KMM plugin in IDEA

You can use this template

KMM is not a thing anymore KMP (Kotlin Multiplatfom) is the way.

While the KMM term is deprecated, the Kotlin Multiplatform plugin for Android Studio is still called the KMM plugin. I wouldn't be surprised if we get an announcement of a new KMP IDEA plugin at some point in the near future. 🤞🏼

I decided to use the following template: https://github.com/mutualmobile/PraxisKMP Because I need to configure it like that: SwiftUI for IOS & WatchOS Flutter for Android & Web