How to choose tools for web dashboard?
There are quite a few tools that serve this purpose (E.g.: Tableau , QlikView are expensive but feature rich; Kibana / Dash have Open Source versions).

You can start with Kibana. It will take a week to learn it. Advantages are :


Part of ElasticSearch stack, it is easy to ingest data (Say that you need to update data from ERP every hour / day /week etc.)  'Logstash' component isused for ingesting / updating data
Widely used, so tutorials / documentation are easy to look up
You can customize dashboards with JS / html
As usage grows, you can add features (Such as access control, periodic email of reports as PDF / Excel etc) 


Some tutorials / Documentation  :

https://en.wikipedia.org/wiki/Kibana 
https://www.elastic.co/products/kibana

https://www.youtube.com/watch?v=gQ1c1uILyKI