Creating a Dedicated Discord Account

People will often consider this secondary account a bot. Yet, it is not. 
A bot offers functions that (most of the time) can be triggered in Discord. Your dedicated second account has to be operated by a human - yourself - via a Discord client.

To limit the complexity and to not have to deal with mapping and capturing several audio devices, I chose to create a new Discord account that is solely used for running TranscriptOMatic. This is necessary because one account can't be joining a voice session from two devices or clients.

Apart from using a good password, consider using 2FA to secure the account. 

People will sometimes see this secondary account as a bot. 
It is not. 

A bot offers functions that (most of the time) can be triggered in Discord or automatically without direct interaction by the owner of the bot.
In contrast, your dedicated second account has to be operated by a human - yourself - via a Discord client.