Thank you for your replies. Unfrotunately I was not very clear on my original post so I will elaborate.
The fields that I want sorted are the ones in the AVAILABLE FIELDS list, not in the FIELDS DISPLAYED IN TABLEBOX.
Please see below:
The reason for asking about this is that in my actual data, my table file (spreadsheet) has 120 column fields arranged intuitively from left ot right. Normally the fields located to the left are the more important ones. This should help me in identifiying which fields to add to the sheet object (e.g. table box).
By default, qlikview arranges them alphabetically and it is quite confusing especially that some of the fields have similarity in the names.