On a 1 hour chart, go to Navigator on your l/h side (or Cont N) go to "scripts" then "period converter." Then in the inputs page put in "extperiodmultiplier" 12. Then Ok.
Then go to the top L/H corner-File, "open offline" & you will see, for eg, EURUSDH12. Click on this & you have an EURUSD 12...