On Trality, paper trading is achieved through using a 'virtual exchange account.'
You have the option to start your bot with an automatically created exchange account, or to add a new virtual exchange on your own.
Automatically created exchange account
When starting a bot you are presented with the choice to trade virtual or live.
After selecting virtual trading, Trality will offer you to start the bot immediately with an automatically created virtual exchange account.
Simply agree and start the bot to start paper trading.
Adding a new virtual exchange account
You simply have to add a new exchange and select the 'Virtual account' toggle when setting it up.
You will be greeted with a setup screen like this:
Here, you can tag the virtual exchange with a name and give it a starting balance. You can load it with any amount of any number of cryptocurrencies too.
From there simply:
1. Go to the bot with which you intend to paper trade
2. In the upper right corner click the blue deployment button
3. Select the virtual exchange that you just set up from the list and follow the prompts on screen to run your bot virtually.