Additional team and channel-related features and issues within Microsoft Teams for Education
Mortenson,
Thanks for posting here, I’m very willing to help you.
For the “lock”, do you refer to creating a private channel, so if you want to remove the lock, please create a standard channel instead. Also may I know how do you pin student in channel, do you mean to pin a channel or something else, as shown below, can you provide us a screenshot so that we can provide further help for you.
Any update will be appreciated, if I have any misunderstanding please let me know, hope you have a nice day :)
Best regards,
Regina