Help with web-based tool dashboard

Hey Y'all,

I've recently took on a side project of implementing a dashboard / overview of several web-based tools at my place of employment. I'm just looking for some pointers as to how to implement things, and the best practices as I'm new to web design and coding.

The dashboard has a set of Iframes to allow interaction with the separate tools, which works, however I am unable to refresh a single Iframe without causing the entire dashboard to refresh. Ideally I need to be able to get a single Iframe to refresh every minute or so, so that new data can be loaded.

Additionally, the building I work in has 4 floors, the top 3 being where production takes place, and I'm curious as to whether its possible to implement a slider to switch between a set of URLs, for an Iframe that being a single number from 2 to 4 inclusive (2, 3, 4).

I wish to thank all the tech gods out there in advance and your knowledge is greatly appreciated.