I use yahoo auction all the time, i am unsure what your question is but its pretty straight forward. You can bid for the starting amount, then usually it goes by 100yens if you want to outbid People. You can also set an automatic maximum bid, so that it people try to outbid you, it will tell them they have to bid another 100 yens, then once they do, it will repeat until they outbid your maximum bid. If you try to snipe in the last 10 minutes, it resets the timer, until no one else bids for 10 minutes.
I live in japan and can read japanese, so being able to use the auction site myself makes things easier, i dont know how the company you are using works.
I hope i could answer your question