The section on Using LCC will tell you all you need to know to create an IM.
You can publish interaction models from the tool provided by the standard user interface. To get to the tool select "Publish IM" from the Tools menu.

Figure 1. The `Publish Interaction Model' dialog box

Figure 2. Selecting an interaction model to publish
Figure 1 shows the dialog box for publishing interaction models. This dialog box allows you to enter a new interaction model, or you can load one from your local disc using the "Load Interaction Model From File" button. Figure 2 shows the selection of an interaction model from the disc. Use the drop down box to change the type of interaction model you wish to search for (the default is LCC).

Figure 3. Giving descriptive tags to the interaction model
Once the interaction model that you wish to publish has been completely defined, you can check the syntax using the "Check Syntax" button on the right of the window shown in Figure 3. Then, enter a set of keywords for describing the interaction model in the box at the bottom. Bear in mind that these keywords will be matched against when a user searches the OpenKnowledge network, so choose keywords that would be expected to return an interaction model like the one you are publishing.

Figure 4. Successfully published interaction model
Press the 'Publish Interaction Model' button to send the model to the discovery service. If the publishing succeeds a message will pop up (see Figure 4).