What are Super managers?

Once you hire your first managers, you will get the default managers:

• Maksym - Infrastructure Manager
• Alexander - Trading manager
• Jerome, Sally and Celia - Rig managers

Each managers respective multiplier for default managers is x1 , and that will never change.

That's where the super managers come in. They are unlocked via in-game chests. You can read more about chest types, and ways of acquiring them here: <<link>>.

Once you open a certain chest, you will get a couple of cards ( you can check which type of cards, and the quantity of cards in the shop, once you tap on the chest ). These cards are used to unlock new managers, and upgrade existing ones. Also worth noting is that you can get multiple cards of the same character, and you can see the quantity of each card when opening chests, and in the Cards popup. 

After you've acquired some cards, you can open up the super managers popup ( located in the footer, next to the Buildings button ), and see which ones are unlocked, their respective multiplier, and which ones are ready for upgrade ( via the bar in the bottom of each card, the first number is the number of cards in possession, the second number is the amount of cards needed for an upgrade ). Once an upgrade is ready, you'll need a small amount of super-cash in order to perform the upgrade, and once clicked, the manager will get upgraded, and his multiplier will grow. 

Super managers are unique, and they're available in all buildings. However, you can place a single super-manager (let's say Arianna for instance ) on a single rig only. If you decide to switch Arianna to a different rig, the rig that was Arianna placed at the beginning will fall back to the default manager.