There is very simple solution that we use and that is to lay out the sheet say 6 up on a A4 sheet as a master page and in document setup set the number of pages to 1,000 if that is the amount you require. Put a page number on each ticket on the page and although they will all have the same number on each page, we put the the first two letters of the customers business name before each number followed by the letters of the alphabet so it then reads for example BT1A, BT2A, BT3A, BT1B, BT2B, BT2C and so on as each page is printed.
You may wonder whether typing 1, 2, and 3 would be easier than using the ListNum field. Although doing that may be easier initially, the value of using the ListNum field becomes apparent when you cut and paste. When a paragraph contains multiple numbered items that you move or delete, Word automatically updates the ListNum fields. Using ListNum fields assures you of accurate numbering within a paragraph throughout the document.
Thanks very much for your prompt reply, which reassured me that I was on the right path. From having read various Help topics, I suspected that I'd have to use an Excel data source for the numbers. Fortunately, my knowledge of Excel was good enough to know about the drag and drop facility to create automatic sequential numbering, so the data source creation was easy. In the end, it was the mail merge (no surprises?) which proved a tad tricky, but I got there in the end. I've used MM many times and quite happily in Word documents, but for Publisher label format, it was of course a bit different. The important bit that I had to discover for myself was the significance of, after getting to the Print stage, going into Print options, to Publication & Paper Settings, and selecting Multiple Pages per Sheet (& in my case, also "Single-sided" cos my default of duplex printing had come up). But TA-DA! All is fine now. Thanks very much again.
I wonder if I’m now up against a limitation of the feature: I have chapter numbers which are large and separated from the main text flow — each in its own text frame on the outer margin. These should be level 1 (‘X’) of the numbering system. Then the next heading (which is in the main body text flow) is level 2 (‘X.x’), and the next level 3 (‘X.x.x’). Unfortunately the level 2 headings do not follow from the level 1 numbering and I wonder if it’s because I’m using separate, non-linked frames for level 1? (The list does have ‘Continue Numbers across Stories’ checked.)
In the Adobe InDesign document I’m working on here we actually have two master pages, an ‘A’ master and a ‘B’ master so I’m going to select both the left and right hand page frames with the special character in on my ‘A’ master and go to Edit>Copy. I’m then going to double click on my ‘B’ master page and go to Edit>Paste in place. this will then copy the special character and position it in exactly the same place as it appears on my ‘A’ master. numbering in publisher