It is extremely simple to do!
Assuming you already install and enable Mambot MosModule and Moddule MosModuleMod then below are the steps you need to do to make it happen!
. Create an article to store your content that you want to show in a module like a message of the day, notice board, annoucement, etc.
. Write down the article id because you will need this in the next step
. In the MosModuleMod where you see "MosModule command:", you enter: mosmodule articleid=id
Further explain, the above line will execute MosModule command and show the article in a module.