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How to create zero-thickness (cohesive) elements?

Cohes
The picture above is taken from the user's guide of Marc-Mentat 2021.1 (e022). As you can see from the picture, the cohesive part has the same mesh with top part. How can I create these zero-thickness elements between two sets of elements?
 
Note: I know how to define geometric and material properties. I just don't know how to create zero-thickness elements.