In Strategy Developer, if multiple developers work simultaneously on the same project, it is important to restrict the access to certain features such as the Warehouse Catalog, and only grant access to a few selected developers.
For users to be able to create and modify attributes and facts, they need to have Architect privileges granted as shown below:

Schema objects include attributes, facts, hierarchies, transformations, tables, partition mappings, etc. and can be found under the 'Schema Objects' folder.
If no Administration privileges are granted, users will not be able to access the Warehouse Catalog.