To Force the check-in a diagram follow the steps below.
1. Open the diagram that you want to force check-in and click the name of the user that has it checked-out.
2. Click Unlock Diagram.
3. A pop-up window appears to notify that the changes the user did to the diagram will be lost if you unlock the diagram. Click Yes to force the check-in been aware of the consequences.
4. You have now checked-out the diagram and just need to click the Check in button to release the diagram so other users can perform changes.
If the owner of the model is not available to do the force check-in, it is necessary to create a ticket in our support platform, to change the owner of the model. Then the new owner can use the force check-in option to release any diagram of the model.