1)

Click on the "Navigation Menu"

2)

Click on "Settings"

3)

Click on "Notifications" tab

4)

Go to "Send one time notification" section

5)

Enter the text you want to be displayed in the One-time notification. You can use the formatting options to improve the readability

6)

Select this checkbox to enable the notification

7)

Create rules for the URL where you want to see the One-time notification

8)

Click on "Done"

9)

Here is how the One-time notification looks like!

We can close the notification if it is enabled

After clicking on "I Accept", this notification won't appear for the same user

10)

To enforce the notification, you have to make sure that Enable checkbox is already selected.
Click inside this checkbox to do the needful

11)

Add proper rules

12)

Click on "Done"

13)

If the notification is enforced, it won't have the close button