You can specify whether an contract card is a main agreement or a sub-agreement and then link the contract with each other. To link one contract with another, you must first select that the contract is a sub-contract, then you search for which main contract it belongs to.
Below you see an example of a sub-contract (Garage) which is linked to a main contract (Rental Agreement - Stockholm).
Benefits
You get a clear picture of how contracts are connected.
You get a clear picture of who or who are responsible for each contract within the same contract group.
It becomes easy to administer new contract that call a main contract.