jump-dev: add room information

Author: mlubin

_posts/2023-10-22-jump_dev_2024.md

@@ -43,6 +43,8 @@ You do not need a ticket to ISMP to attend JuMP-dev.
 JuMP-dev will take place at HEC Montréal in the
 [Côte-Sainte-Catherine building](https://www.hec.ca/en/campus/cote_sainte_catherine/).
 
+**Events on Friday and Saturday are in the Amphithéâtre Banque Nationale on the garden/RJ level (above the ground floor). Events on Sunday are in the Rona and Fonds Cogeco rooms on the blue section of the 1st floor (above the garden level).**
+
 The closest hotel is the [Hotel Terrasse Royale](https://maps.app.goo.gl/Ytg8NTakWvNuQoTCA),
 which is a 17 minute walk.