This feature lets you search for Members present and Channels available.
How it works:
Go to the search Members and Channels option and type the initials of Member/Channel you want to search and you will be able to see them.
Searching serves the purpose of looking for the required channel/member with one click. With big organizations, comes a lot of employees and channels, where this feature looks for them efficiently for you.
If your chat has a lot of channels/members and you want to look for some of them in particular, then this feature is very useful. With this feature, you can also cross check if someone from your team is not missing in a channel.