First of all you need to make sure that modules are installed on the server. Can you see them in Sitebuilder administrator CP -> Server -> Modules section? If you see there all modules it means that not all of them are included into plan. Each user is assigned to plan which have some properties as number of templates, modules ..etc. included. Try to check Users -> Plans -> PLAN_NAME -> Modules section. Select all necessary modules and add them to plan. After that modules should be available for you in Wizard.
Let me know if you need further assistance here.