As of now it is in the Monster UI.
In the docs it states:
# Update Monster's config for Crossbar's URL
sed -i "s/localhost/${IP_ADDR}/" /var/www/html/monster-ui/js/config.js
However, "localhost," or any other IP address does not even exist in /var/www/html/monster-ui/js/config.js
This means the documentation for installation is not correct.
I was able to solve that with some help, but after adding the IP address, I restart and visit MonsterUI again, I am getting more errors
There are some other minor issues in the documentation which are a problem also.