Agree on the labels before you touch the portal.
Before anyone opens the portal, agree on what you're protecting. We build a simple policy: four labels, what each one is for, and what should happen when content is shared. It sounds like paperwork. But every video after this one turns a column of that table into a setting in Purview.
Step through More in Let's start with the basics
These videos have no narration — the sound is background music and interface clicks. Step through presents the same content as text.