Copy-paste Holy Word: Sanctify macros for Priest in WoW Midnight: cursor and self-cast 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 [@cursor] Holy Word: Sanctify
Open the macro window (/macro), make a new macro and paste: #showtooltip /cast [@player] Holy Word: Sanctify