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In meetings, you constantly report on progress: what's done, what's still happening, what hasn't started. French speakers default to passé composé for all of these — but English splits them into two tenses.
In status updates, present perfect is your default: "We've finished X," "We've started Y," "We haven't heard back from Z yet." Switch to past simple only when someone asks when: "When did you finish?" → "We finished on Monday."
French speakers often say "We have finished the audit last Friday" — mixing present perfect with a past time marker. Pick one: "We've finished the audit" (no time) or "We finished the audit last Friday" (with time). Never both.