A Host can remove or ban a member at any time. To remove or ban a member, you need to first navigate to the member's profile page when you're on the web. Click on the three dot menu in the upper right corner and select the option that says "Remove from Network."
From there you'll see two options.
Remove a member
If you choose to remove a member, this will only remove their membership, not their contributions or posts. They can always re-join in the future and any posts or comments that they created will remain.
Ban a member
Selecting the option to ban a member will permanently ban them and remove all of their content and activity from your Mighty Network. They cannot re-join.