In order to add content to the catalogue, you will have to insert further objects of type 'Multimedia Catalogue Section' and finally a 'Multimedia Catalogue Entry'. The procedure is the same as for the 'Multimedia Catalogue' object.
If you would like to use the workspace, you will also have to create a collection of type 'Workspaces' below the root collection of the hypertext system. Set the configuration variable workspace_name of the MULTIMEDIA CATALOGUE to the name of this collection (see section 4.6). In this collection you will have to create private collections of type 'Workspace' for each user. The name of this collections has to be <username>_workspace. Make sure to set the rights to 'R:a' and the author to the users name, to make it only accessible by that user.
Another collection of type 'Collection' has to be inserted for annotations. Make sure to set the configuration variable ANNOTATIONS of the hypertext system to the name of this collection. This collection should have 'W:u' rights, which allows any logged in user to place an annotation into the collection, but will not allow to delete other annotations as its own.
Profiles of the users have to be stored in a separate collection as well. This collection has the same permissions as the annotation collection. Its name is arbitrary, though 'profiles' is a good choice. Set the configuration variable PROFILES on the name you have chosen.
For further information please read the section on 'Inserting Content' in the users manual.