Assuming you open a long position with bitcoin at $90000, you will see the position as 1.
Also you open bitcoin long position at $91000, you should see the position as 2.
I means same coins with 2 positions. Just as if you open bitcoin as position 1 and another coin as position 2.
On most exchanges, the bitcoin amount you used to open 1st and 2nd position will add up as just only one position.
The reason I asked this question is because I want to try grid trading and this is how it can be convenient for me on a single exchange.
Maybe you mean when you do leverage trading you take a trade for $90k then take another trade for $91k here if you are in a long position and if you want to take two trades in a long position then they will not be different when you do the first trade and use the same coin for the second trade then you may not be able to do the second trade because your money will be added maybe you can buy other coins where you can see two different trades but if you buy the same coin you will not see two different trades. I don't know how it is on the unique exchange but I have used the Binance exchange and I have seen something like that there.