So it is like the way we spend on Bitcoin wallet in one account in Trezor? Where it will automatically use some addresses that have balance to satisfy the amount to be spend and it will shoe in txn which addresses that are included?
MyEtherWallet does not support sending from multiple address
and no other wallet too.
You should be able to MyEtherWallet and Trezor web interface at the same time since the derivation paths are the same. Note that Trezor's website won't display the next account if the one before doesn't have any transactions.
Edit: Sorry, but I got confused a bit. You can't spend from multiple addresses, even in the Trezor web interface. That's one of the fundamental differences between Bitcoin and Ethereum.
I get it now. Sorry for making you confuse, that's whay I mean, like spend from multiple addresses.
If the above post of mine with image attached which in myetherwallet inteface, if we will see it on trezor ethereum wallet interface, it will look like this (see image attached);
(The addresses list from the MyEtherWallets becomes an list of accounts in the trezor ethereum wallet interface)This is good alternative if you can't add new account in trezor ethereum wallet interface, you can use myetherwallet to select some addresses even 0 balance, it will just automatically become an account in trezor ethereum wallet interface)
EDIT: Thanks btw, @BitCryptex.