This is a one time setup process to start using OneDrive. Open Flie Explorer from the desktop, start menu or taskbar The icon looks like this:
On the left in your list of folders and drive you should see OneDrive like below.
Click on it and in a moment you should see this
Enter your @continentaloffice.com email address here.
After signing in, you'll see the following informational images as you walk through the setup and tutorial. Please read through this information as it is helpful to know.
The mobile app is not needed and you can click "Later" at this prompt.
Once you've gotten this far, you should see the following that your folder is ready. Click the Open my OneDrive folder button.
You will now see two listings for OneDrive (Personal and Work)
We want to use the "OneDrive - continentaloffice.com" one for storing and sharing files with Clients. You get up to 1TB of storage here.