Running Switch tags within DFP is simply a matter of creating a new creative and pasting the Switch ad tag into the Code snippet window.
You will notice a warning message stating that DFP cannot recognise the tag, and to manually inset click tracking macros/cachebusters.
There is no cause for concern as Switch tags have cachebusters built in, and clicks are not monetised within the RTB market, so tracking them is not required.
Please note that if you wish to track clicks from non RTB campaigns, you will need to ensure that
"Support 3rd Party Server Clicktracking" has been enabled on the ad unit's invocation code(tag) before extracting from the platform. You can then enter the DFP click macro in the provided placeholder.