For a client-work pilot in Kimai, create one project with billable and nonbillable activities, multiple users, and a rate change. Track a few days, correct an entry, export a report, and generate a draft invoice. Reconcile its totals against your own calculation before involving real clients.
Inspect user visibility and whether historical rates remain interpretable after changes. Time data often becomes financial evidence; confirm that entries can be reviewed and corrected with an audit trail, then document an export path before migrating old records.
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