Is it possible to send BTC from a specific address? How to do it?
Yes, it is possible. As ghost43 already suggested, if you use Electrum, you can activate the Coin Control feature from the "Adresses" or "Coins" tabs.
You can read full guide here: How to spend specific UTXOs in Electrum
If you have electrum wallet and have an access to it, i guess it's self-explanatory that you can send bitcoin to any wallet address.
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It seems you misread OP's question.
