On loading the keystore, the person is introduced with a selection of addresses, as derived through the mnemonic held via the keystore (if the keystore has "type":"mnemonic"). Illustration: If a person hopes to brand name a devnet account, then an .json file must be additional within devnet/accounts directory. One example https://bookmarksoflife.com/story3971648/detailed-notes-on-multiversx-wallet