The whole project library is accessible to you via this option:
This section will include your source files as well as the reference materials that have been provided for your job:
tocBy clicking this option the project library window opens. This gives users access to the project’s assets and reference material:
...
You can also include attachments (invoice, external additional documents) to support your work.
Working offline:
To continue your work offline you will need to configure an export with the relevant information for your task. Then, you will be able to import the file again and all the information will be loaded in the Editor.
...
Note that as a user you might have some restrictions to work offline. If you have any doubts, check with your project manager or administrator the details of your user rights.
...
.