Hi
I have created the following to put the code in cells on multiple sheets:
For Each ws In Sheets(Array("C-H-1218 Jenner", "C-H-1219 St Peters", "C-H-1235 Moxley"))
With ws.Range("C12")
.FormulaR1C1 = "=-ROUND(SUMIFS('TB actual'!C4,'TB actual'!C3,RC[4],'TB actual'!C[-2],R3C2,0)"...