We are currently updating the articles for 1.09.0. Translated articles will need to be updated by their respective authors.
No More Room in Hell uses an external system for barricade points. However, the process for this is quite simple.
In order for your map to use barricading, you need to place nmrih_barricade_point entities at any place you want the player to be able to barricade. You could have two per door, three per door, whatever.
After you've added these entities, throw them all into a visgroup and hide the visgroup before compiling.
THIS PART IS NO LONGER NEEDED
There is a tool under the utils folder called NMRBarricade.exe -- run this, click 'Open VMF' and point it to your VMF, then point it to the NMRiH maps folder.
The tool will create a custom .NMB file that will be read in by the game in order to spawn the points automatically.