Customize Notifications in Channels

https://support.office.com/en-us/article/customize-channel-notifications-in-teams-c72b8c07-37e1-4a0b-82c9-fdfda04f15b2

Bookmark Specific Content

https://support.office.com/en-us/article/mark-a-message-as-saved-or-unread-in-teams-3f04cba4-7f80-42ca-9983-cd93676c7420 
 

@mention

https://support.office.com/en-us/article/use-mentions-to-get-someone-s-attention-in-teams-eb4f059d-320e-454e-b111-03361d4d6855
 

Quick Video Sync or Call

https://support.office.com/en-us/article/video-start-chats-and-make-calls-a864b052-5e4b-4ccf-b046-2e26f40e21b5?wt.mc_id=otc_microsoft_teams
 

Rich Text Editing

https://support.office.com/en-us/article/format-a-message-in-teams-9f7c64e4-0316-472f-b1e8-430cebcfc1e5

Send an Email to a Channel

https://support.office.com/en-us/article/send-an-email-to-a-channel-in-teams-d91db004-d9d7-4a47-82e6-fb1b16dfd51e

Add Content and Notes to a Team

https://support.office.com/en-us/article/add-content-and-notes-to-a-team-1edae27c-25c8-4c1e-9a6d-c06cfb3e4c44

Create a Plan with Planner

https://support.office.com/en-us/article/create-a-plan-with-planner-d000976a-7490-4ddf-b9af-09ee764891e2