@ Mel
First, the requirements mentioned in the doc for quote are for the actual CSV file. I suspect you are not manually creating a CSV file, rather I’m guessing you are using Excel or LibreOffice or similar app to create it. Correct? If that is the case, you do not need to worry about the quote because when the app saves the file to a CSV file, it’ll automatically do the quoting.
My answers are going to assume you are using a spreadsheet app to create the CSV file…
re: Is it necessary to enclose Category header in single quotes?
Do not add quotes to any of the headers.
re: When you say each entry can have multiple categories assigned to it do you mean an entry is not limited to one category but can be entered more than once and into different categories in the same file. (It assumed the fie has more than one category in it)
No, you add the entry once, the single entry can be assigned to any number of categories.
re: The Categories must be separated by commas. Does that mean that in the category field each entry must be separated by a comma.
No, each category, like so:
Category One, Category Two, Category Three,
re: The CVS Fields must b e enclosed by a single or double quotes.
This will be handled by the spreadsheet app.
re: Does That means that in the file to be imported all headers(fields) must be enclosed with sing or double quotes.
This will be handled by the spreadsheet app.
re: Next, do you mean that it when downloading a Category it should be downloaded as a parent and later changed to a child with a parent for lack of a better wording on my part if the category has a parent.
I suppose when you say downloading you mean importing, correct? When you import, each category will be imported as a parent. If you need a parent/child relationship between the categories. You will have to create that relationship after you do the import. Editing the category after you import to set its parent category will not affect its relationships to the entries in which it may have been assigned. This is handled exactly like the category relationship for WordPress posts. This functionality was modeled after WordPress so it would be very familiar to everyone of usage and functionality.
Hope that helps!