Hello Daniel,
Happy to help!
It sounds like you are currently accessing the web-based version of Microsoft Office. You'll need to have any of these versions of Microsoft Office installed in order to use certain features of Storyline 360:
Microsoft Office 365 (desktop apps only) or the latest perpetual version of Microsoft PowerPoint (32-bit or 64-bit)
Mac users: Office apps must be installed in your Windows environment.
You may need to reach out to your IT staff so they can install the desktop version of Microsoft Office for you.
Hope this helps!