You can prebuild everything before they arrive - when you get the Order number just add the devices and go to Organization > Your Network > Switches > Switch Stacks and add them together in the dashboard.   Then we always coordinate things by switch MAC so we build the stack, rename the devices in the dashboard to something meaningful (like HUB1 11:76, where 11:76 is the last 4 of MAC), and then when the actual hardware comes in we match the dashboard name with the physical switch, connect them as defined in dashboard, plug em all in and go.   I would second the advice to connect them up locally first before going to the customer site. They take a while to update firmware and download  configs and (this only happened once) but there was breaking firmware update that took forever to get patched thru (had to do with hardware that shipped with old SSL certs during .. heartbleed I think?) ... View more