Composer call two scene at a time

Getting Started Newbie Questions
#1

Is it possible to call two scene at a time ?

like one scene for background and another one for front 

ex:

– composer for background of game

local composer = require(“composer”)

–like one for background ui

composer.gotoScene(“scene.background”)

–another for front ui

composer.gotoScene(“scene.front”)

#2

You want to overlay one scene on another:

https://docs.coronalabs.com/api/library/composer/showOverlay.html

#3

What is in these two scenes?

If you only need to separate content into layers, using composer.* is overkill.

In the separation of content case, you would be better off simply using display groups to separate your content?

https://docs.coronalabs.com/api/library/display/newGroup.html

Also, SSK2 provides a easy way to set up (named group) layer hierarchies.

#4

You want to overlay one scene on another:

https://docs.coronalabs.com/api/library/composer/showOverlay.html

#5

What is in these two scenes?

If you only need to separate content into layers, using composer.* is overkill.

In the separation of content case, you would be better off simply using display groups to separate your content?

https://docs.coronalabs.com/api/library/display/newGroup.html

Also, SSK2 provides a easy way to set up (named group) layer hierarchies.