You cannot. It is a bundle and you cannot make a giveaway for those, period. They are a flexible package with flexible pricing. You can only make giveaways for individual products or packages. Support will not be able to help you.
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Maybe I misunderstood something here, but I am able to create a giveaway for the Sacred Franchise Pack.
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FTFY ➡ 
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The giveaway creator includes Sacred Franchise, and it is possible to select it, but it registers for the "old" pack, not the current Steam bundle. The Admin will have to address the issue.
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There is a Reply button next to the date, under each comment, which you can use when need be. That way people get notifications when you reply, this way, however, they do not. :)
Welcome aboard the Steamgifts ship! ;)
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The giveaway creator includes Sacred Franchise, and it is possible to select it, but it registers for the "old" pack, not the current Steam bundle. The Admin will have to address the issue.
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How do I post a giveaway for sacred Franchise pack - it won’t find the bundle.
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