Remove the filter arrows (data|filter|autofilter)

Then select the whole range--last header row to the bottom row and include all
the columns you want filtered.

Then do data|Filter|autofilter.

inquirer wrote:

I have been given a spreadsheet which has autofilter on many columns. I
can only manage to put it on one column at a time.
Could someone tell me how to autofilter more than one column at a time.
Thanks
Chris

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Dave Peterson