Hi @Belan Marek
According to your description, what you want can be achieved using different Edge profiles.
For example, users use profile 1 which Continue where you left off on startup, you use profile 2 which Open a new tab on startup.
You can start a new browser session with a new profile using the command like below (the profile number can be different as long as it's not the user's profile):
start msedge https://ourintranet.com --profile-directory="Profile 99"
It will open Edge with a new profile with only one tab of your intranet site. Users can switch to their own profile to have the restored tabs.
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
Regards,
Yu Zhou