Kenn, welcome to TalkGraphics.

If you are using the Plus on-line Help then the filter for your product needs to be set.
For P&GD+ there is no such option.

If you can get hold of a Xara Template that has page numbering (from a trial) then you can add that to your Template list and it will work.
Another opportunity might arise should a TGer have presented a page-number design in prior Threads.

Acorn