What dispensary process would break first if your best employee quit tomorrow?

I’m curious how other legal cannabis operators think about this.
In dispensaries, it seems like the biggest risk is not always sales. It is the process only one person actually knows.
Examples:
Inventory receiving
Menu / POS / shelf sync
METRC or BioTrack workflow
Drawer closeout
Discount approvals
Shift handoff
Vendor delivery process
Discrepancy fixes
The scary part is when the owner thinks “we have a process,” but the real process is just “ask the one person who knows.”
For operators, managers, or budtenders here:
What process would break first in your store if one key employee left tomorrow?