How to make a slow navigation in Cospaces Edu?

Please, help me to navigate in Cospaces Edu (not in play mood). When I drag&drop object from the library, for example, house without door, it’s very difficult to get inside it and drag&drop furnitures inside house.

How can I change that?

Although, can you update the library and upload more 3D models and environmets?

Thank you for your answer.