HOW DO I MAKE MONEY WHILE I’M AWAY FROM THE GAME?

You make money while being away from the game by automating Businesses.

When you have unlocked the right Sicarios and collected the right amount of Cards & Cash the ‘automate business’ button will appear in front of the business. Tap on the button.

Now in the Businesses 'Automate’ menu, you find the ‘Automate’ button. Tap on it to proceed.

Now, you will find that the ‘Collect Cash’ button has changed into an icon indicating that the business is automated and provides the period of time it takes for the profit to be cycled into your inventory (highlighted by the yellow square). 

When you come back to the game, you are greeted with an Idle Income screen, tap on the collect button to add your Idle Cash to the inventory, or double your Idle Cash by watching an advertisement.