Project 2021 How to make milestones/ sub tasks show up on summary task line in gantt chart

[Sieff1]

I have multiple sub tasks that are linked to one main task. Is there any way to get the icons for the sub tasks on the gantt chart to appear on the summary line. So that when I roll up the summary Task I can have multiple icons or milestones/subtasks all appear on the same line.  Below is a image of what I want to do.

[#2]

@Sieff1,

You mean like this? Just put a "yes" in the Rollup field.

John