A contract needs to be activated on the blockchain in order to be executed.
When a contract mints token, the assets can be transfered without the need of the contract to be active.
A contract can be activated using:
Desktop Wallet connected with Local Node
Check how to connect Local Node
Once you are connected with the local node, you will see in the Active Contract Page a new button to Activate a contract.
Click on the button, a popup will open up and you can drop the .fst file, choose the number of blocks for which the contract will be in the ACS.
For advance contract which require a higher rlimit you can choose a higher then the default rlimt. Note: the activation fee is proportional to the rlimit.