Automate codes for Smart Lock

[Jennifer M.]

I hate to do this since every post I looked up always says there's tons of other post on this issue, but I'm starting to feel like I'm getting no where.

I'm looking for a smart lock I can control remotely and can auto generate codes with start/expiration dates. Everyone seems to really like Schlage Encore, however I cannot find one anywhere. I read that the second best is Nest x Yale, but no one explains how it integrates with channel managers and/or calendars. I was able to buy a Nest x Yale but have no clue how it'll all connect. After those two options, I see a little bit about Schlage Connect and Yale Assured (z-wave). Both of which are also difficult to find and/or not a lot of info of how it integrates with booking systems. 

Please assist.