India H1b Dropbox appointment questions

Hello Folks!

Couple of quick questions about securing a dropbox appointment for getting my h1b stamped (currently in US, Indian citizen).

  1. Can I, for example, choose a slot in Chennai VAC, but then drop it off in the US consulate at Mumbai VAC? I’ve read a lot about this, but confused as I particularly chose a specific consulate on CGI website.

  2. Other than literally going on the CGI website and checking for a slot, are there any other apps/websites where we can look for slots? What have folks found useful here?

Thank you!

  1. Yes, you can.

  1. No, that’s the only official site.