Copy-paste Beacon of Light macros for Paladin in WoW Midnight: focus and mouseover versions, ready to use. Add Shift/Ctrl/Alt spells, raid markers and a chat callout in the macro builder.
Open the macro window (/macro), make a new macro and paste: #showtooltip /cast [@focus,help,nodead][@mouseover,help,nodead][] Beacon of Light
Open the macro window (/macro), make a new macro and paste: #showtooltip /cast [@mouseover,help,nodead][@target,help,nodead][@player] Beacon of Light