Click on the Briefcase button.

In the main form select the file or files to attach, to recover or to delete from the Briefcase® storage.

When you save your rvt file you will see that the size of the file increases because of the attached files.

Briefcase allows any type of file up to 10 mb, without quantity limit (so far).

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin.

You may need to restart the Autodesk product to activate the app/plug-in.

To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, click Control Panel > Programs > Programs and Features (Windows 7/8.1/10/11) and uninstall as you would any other application from your system.

Some users behind a Firewall or proxy may have problems to activate the add-in. Please follow the instruction on the link to solve proxy problems.

https://forums.autodesk.com/autodesk/attachments/autodesk/78/504135