My 'method' is .....
Every CWGC grave can be identified on their site, so once you find one, you know exactly which Section and Lair number that stone is.
Most people only look for individual casulties on CWGC, but the 'Casualty' box is a pull down menu and when pulled down, changes to 'Cemeteries'.
If you then key in Glasgow (which is the best option), all the Glasgow Cemeteries appear and the one you want can be picked out.
The old part of Dalbeth is listed as GLASGOW (DALBETH) ROMAN CATHOLIC CEMETERY and the cemetery is listed as GLASGOW (ST. PETER'S) ROMAN CATHOLIC CEMETERY
The single CWGC grave in the old part is listed as 'West Side, Lair 396 not that that would really be any help unless in was Lair 395 or 397 you were looking for!
This method also helps to work out which way the Lair Numbers run - if and when you identify a couple of CWGC stones, all should make sense.
Anne