How do I stop two staff replying to the same WhatsApp order?

Give every chat one owner. Have staff add a label to a chat before they reply, and use chat assignment (a paid Meta Verified or Meta One feature) or an API shared inbox for a bigger team.

• The free app works on one phone plus up to 4 linked devices, and everyone sees the same chats.
• Make a label such as “Taken” and agree that whoever opens a new chat adds it before replying. You can create up to 20 labels.
• Assign chats: a Meta Verified or Meta One subscription links up to 10 devices, depending on the plan, and lets you assign chats to staff.
• API: a provider can connect an inbox or support tool, so several staff work from one number.