Thank you for your response, Charles Kenyon.

I've managed to create a new document and get it to look and work exactly as I wanted, however, there are a few strange problems for which I've tried various adjustments without success.

The font size I specified in my styles was 12; everything looked correct. I want users of the document to be able to easily increase the font of the whole document, however, each time the font is increased (by selecting the whole document), the tab gap between the bullet and the start of the corresponding text visually reduces. This happens up to font size 16. At font size 18, things get even worse; the text of the third and fourth lines move further AWAY from their corresponding bullets than the indent set in the bullets style and at 20 font, the same happens to the text of the second line also. Removing the 'indents' in the bullets and numbering settings does not make any difference.

There are a few things in your posts which I have not understood and maybe one of those could be the culprit. See these below.

Space before formatting?

Do you mean first two choices?

Manually? I set the styles for the fourth line in the same way I did for the others.

How do I apply the styles to hundreds of items in a long document? I have searched the web but have only found info on how to copy styles from one document to the next and not how to APPLY the styles.

Any assistance with the above would be appreciated.

Thanks.

UPDATE: Changing the 'Follow number with' option from 'Tab character' to 'Nothing' fixed the problem of text moving closer to or away from the bullet, however, how do I get the space between the bullet and the text? Surely there is a more 'correct' method than to enter a few spaces after the bullet typed in the 'Number format' field? Thanks.