Place your makers on the ground floor and set them to show only on the ground floor.
Now on the upper floor you will place new markers that will only show on the upper floor but you will also change the marker properties to become "Place Linked Marker".
You will then be asked to choose the view that you want to link to - which will be the section on the ground floor.
The upper floor markers can be placed where ever you want now but will always link to the ground floor marker and show what ever the ground floor marker shows.
Make sure the vertical range of your ground floor marker is not limited or at least shows the height for the storeys that you want to show.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11