Split your screen with just a few clicks and apply your custom layout to your whole audience.
Open your workspace settings and activate Enable forced layouts. Apply the changes.
After adding your content sources (i.e. presentation, video, etc.), open the layout mode in the bottom on the right.
Add additional panels from the left like the audience list or the Q&As. Those panels will stick to the left.
You can resize all elements on the screen and rearrange them as well. By applying your layout, your participants won't be able change their layout individually.