Hello Jacob,
You can use LS-PrePost to open the input .k file generated by Workbench. Then you can refer to the Keyword Manual Vol I (https://lsdyna.ansys.com/manuals/), as Armin suggested, for the definitions of the various *CONTACT parameters. The default contact SOFT option used in Workbench is SOFT=2, which is a segment-to-segment contact, while the default option in LS-DYNA is SOFT=0, which is a node-to-segment contact. In LSPP, to add optional cards for *CONTACT, please check the A, AB, ABC, etc. boxes.
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