Do you mean "how do I adjust the lathe tool numbers"? This is handled in the Tool Library:

Thank you for the answer,
In case that I arrange tools positions wrong. While short tools working If the tall ones crushes to chuck is fusion 360 warns me?
There currently is no machine simulation for lathes in Fusion.
So the software is not aware of how your tools are placed on the turret and cannot warn you of collisions.
Laurens Wijnschenk
3DTechDraw
AutoDesk CAM user & Post editor.
Found out the hard way is the best way to win.
Thank you