How to connect a "chain" of monitors?

Question

laptops

There is a laptop, an interactive panel (mulriboard) with windows on board, and a monitor.
From the laptop there is an image on the interactive panel (screen extension, HDMI).
You need a separate screen that duplicates the screen on the interactive whiteboard.
When connected in series Laptop --- (HDMI) --> Inter. board ---- (VGA) -----> Monitor, the last one does not work, writes Check the cable
What are the solutions to the problem so that there is one main screen, and the other 2 are the same extended ones?

Answer 1

hdmi splitter 1 in 2 out + monitor with hdmi input and board-like resolution. There will be the same picture on the board and monitor