Changing the bss-minrate for my access points
I've recently had a visit from a corporate IT representative. He suggests we change the bss-minrate so that the signal distance is less but stronger. Apparently 45Mbps down is not good enough. We have an AP in every room so coverage is great. I understand this is all done via CLI, I can log in but cannot find the option. I have read the bss-minrate vs smart-roam article but it doesn't tell me how to do it.
Could someone advise the basic commands I need to know and also the options I have for changing the signal distance? Also should I be aware of any possible outage when making this change? Can I apply this to a single WLAN-Group for testing only?