How do I see who voided an order, adjusted stock, or changed a price?

Use the activity log. On the Staff page, tap Activity log at the top right and enter the owner PIN to see the store's sensitive actions, newest first: voids, returns, manual stock adjustments, approvals, staff and permission changes, owner PIN changes, product price and cost changes, and product deletions. Ordinary checkouts aren't listed.

• Each entry shows what it touched, who did what and when, and the result — for example “M price $390 → $350”.
• Filter by staff member (deactivated ones included), action type, and Today / This Week / This Month.
• Tap an entry that points to an order, product, or customer to open its detail.
• Order detail, product detail, and each staff member's page have their own entry listing only the records about them.
• Deleted products still show their name and price at the time in the log.