The key points to launch and engage events are as follows:

• Schedule a meeting event to a wide audience. It is always advised to have sponsorship from top management for the team with the responsibility of the rollout present in Office 365.
• It is advised that you have the key users or champions be active during the event to interact with the public with questions and milestones, and to have the audience engaged with the adoption of Office 365.
• You can also create Microsoft Teams for the champions group to engage with the audience or, if the organization is big, create a Yammer group.
• Make questionnaires using Microsoft Forms and create prizes, contests, and some small events in several locations of the organization with an door open policy.
• Create stickers, flyers, posters, and give T-shirts to the champions.
• You can also make some playbooks to distribute to the audience to provide some daily activities to show them how to be more productive.