Follow the instructions here:
https://peltiertech.com/how-to-use-someone-elses-macro/
To use the macro on another sheet (or tab as you call them), simply select a cell or cells with a phone number (or numbers) - in your example sheet, you could select cells J2 and K2 - and run this version of the macro:
Sub FixPhoneNumberss()
With Selection.EntireColumn
.NumberFormat = "###-###-####"
.Replace What:=")", Replacement:="", LookAt:=xlPart
.Replace What:="(", Replacement:="", LookAt:=xlPart
.Replace What:="-", Replacement:="", LookAt:=xlPart
.Replace What:=" ", Replacement:="", LookAt:=xlPart
.HorizontalAlignment = xlCenter
End With
End Sub