How do you mean "Overlapping the table"?

Would you like them merged into one table? You could add a tag to each client for grouping them later.

If you're worried about duplicate records, you can use the dedupe extension to merge data.

https://support.airtable.com/docs/dedupe-extension

Try exporting it as a CSV and importing it with the CSV: https://support.airtable.com/docs/csv-import-extension

That'll let you add records to an existing table

To efficiently integrate data for Plant Client 2 and Plant Client 3 into your existing Airtable database without overlapping tables, you can use Airtable's Linked Records and Multi-Table Views. By creating separate tables for each client and linking them through a central database (such as a Clients table), you can consolidate all data while maintaining clarity and avoiding overlap.