I have been looking at different solutions for making content available offline. Internet-In-A-Box is another solution. When accessing that you would write box.lan into the browser instead of an IP address.
Thanks for the offer but the readthedocs were for the RACHEL-Plus which is separate from the open source Pi releases. They’re not something we’ve been maintaining or providing to people. Those docs will be changing at some point and won’t match the Pi.
I don’t think the option is available from the advanced hardware page which was made by Intel and is the official way to change settings on the system.
You’ll have to run these commands on the command line over an SSH connection which are officially unsupported but should work
uci set system.@system[0].hostname='rachel'
uci commit
sudo reboot now
Users connected to wifi afterwards would be able to access the device at “http://rachel”
http:// is required as browsers generally default to search engines without it.