In your case, I feel like creating Workflow might be the easiest option to get started as you don't really want to update JMP table but rather always re-create new table.
Create new workflow
![jthi_0-1701779741265.png jthi_0-1701779741265.png](https://community.jmp.com/t5/image/serverpage/image-id/59312iA3D528C6ABA5E2B9/image-size/medium?v=v2&px=400)
Start recording actions
![jthi_1-1701779778285.png jthi_1-1701779778285.png](https://community.jmp.com/t5/image/serverpage/image-id/59313iAA657A42AFA0D66F/image-size/medium?v=v2&px=400)
Here I have excel opened and I have added new column
![jthi_2-1701779822165.png jthi_2-1701779822165.png](https://community.jmp.com/t5/image/serverpage/image-id/59314iCEC4608BDEFED29B/image-size/medium?v=v2&px=400)
You can stop recording at this point, as I feel like this is all you need.
Then you can save your workflow and just rerun it to create new table whenever you need one.
-Jarmo