Great and welcome again to the platform!
Once you are provided with an UPTEAMIST URL, you will be able to login using your Office 365 account information.
Once connected, you will need to accept UPTEAMIST for your organization:
You should now land on your brand new UPTEAMIST environment. The next steps is to Set up permissions via the MANAGE option. Set users as contributors or readers or unauthorized account as shown below:
You can also start by adding your company logo and information under Settings.