Creating a multi-page document in Preview

Greetings all,

I am trying to use "Preview" to create a multi-page pdf document by combining separate documents into a single expression. Should be simple enough, but, even following stock Apple Support instructions such as this:

https://support.apple.com/en-us/HT202945

proves futile. Instructions as posted do not match what is present on my desktop.

For the record, and as an example, I have two scanned one-page documents that have been rendered as JPGs, and I wish to combine them and export them into a single PDF file. Following the instructions in the quoted article has never yielded success. For instance:

• Line 3 states this "To indicate where to insert the other document, select a page thumbnail."

This is unclear, is it referring to a current document you've opened (which, btw, is only one page, so in thumbnail view the page is pre-selected) or is it referring to the 2nd document you wish to add?

• Line 4 states this "Choose Edit > Insert > Page from File,* select the PDF that you want to add, then click Open." - this ALWAYS fails, as I choose Edit>Insert but that is as far as I can go, as the "page from File" is greyed out and rendered inoperable.

Saving as a pdf to my desktop will inevitably contain one one of any documents chosen for combining.

Any advice (and clearer than Apple instructions) wold be most appreciated.

Regards,

DLC