Is it possible or will it be possible to connect ledger nano s with electrum and send bitcoin from a specific address?
Right now when i connect ledger with electrum i can't choose the address that i want to send the bitcoins because ledger chooses for me.
Yes... You simply go to either the "Addresses" tab... or the "Coins" tab... ("View -> Show Addresses" and "View -> Show Coins" if you can't see those tabs).
Right click on the address you want to send coins from and select "Spend From". You may need to change the "Receiving"/"Change" filter to find the address you want.
NOTE: the address you want to send from actually needs to have coins in it... you can't just send from any address in your wallet. This is a Bitcoin limitation, NOT a ledger or Electrum limitation.