I'm a little bit confused about how the deposit works

when sending BTC, in instructions it clearly states that "when using 2 different btc addresses, NVOT will be send to each other according to the deposit" - but I can enter only 1 BTC address, so how does that exactly work?

let's say I have 2 btc addresses, #1 and #2, I will give you an address to the #1 BTC address (only to the #1) and then send 0.5 BTC from both, #1 and #2 (total of 1 BTC) to the BTC address generated on NVO site... will I get the exact amount of NVOT on both addresses (worth 0.5 BTC on each), or will I get amount corresponding to the 1 BTC to the address #1 (of which you got an address)?