Group layout.

[eiLLFire]

I am using version 6.4.2. I hope for a feature where I can input a gap, and the child elements will be responsively distributed, similar to the CSS flex layout.

    const group = new Group(activeObjects, {
      gap: 12
    })

Can the LayoutManager achieve this feature? I rarely find articles explaining LayoutManager.

[asturur]

this because the GroupLayout is a beta feature that was done to accomodate some desire to change.
The layout manager is supposed to be a skeleton on which you implement your preferred version of it.
You can develop a flex layout manager and either keep it for you or contribute it back for the extensions bundle