It looks like you’ve reached out to our Support Team about this and they replied today with a suggestion. I’ll share details of the suggestion here in case it’s helpful:
Can you please clarify what you mean by Transfer button? Are you looking to transfer existing Lead data from Facebook Lead Ads to Google Sheets? If so, you'll want to create Transfer Zap for that which you can create here in Transfer by Zapier: https://zapier.com/app/transfers
I do like to hint though that Facebook Lead Ads isn't one of our supported apps as yet as a transfer source. If you are lookin to import Leads, your best bet is to export them from Facebook Lead Ads, save them as csv and upload them as Google Sheets.
Are you having issues seeing any one of these app connections within the Zap? If so, can you please advise which specific connection isn't being exposed?
If you’ve got any questions regarding their suggestion it would be best to continue the conversation with them over email. If you can’t locate their reply I’d recommend searching your spam/junk folder or searching your inbox for any emails from zapier.com in case. Sometimes their emails can end up in the spam/junk folder by accident.