Hi @Namrita Anchan ,
Welcome to the Q&A Community
I’m here to assist with your problem.
Regarding your concern about the missing chat grouping feature, based on your description, it appears this issue is related to an ongoing incident currently affecting the Microsoft Teams user interface.
You can find more details about this incident in your organization's Admin Center under the Service Health tab, listed as Issue ID: TM1139221.
In the meantime, a temporary workaround is to clear the cache in the Teams desktop client, which may help restore functionality.
Additionally, we recommend reporting this issue directly to the Teams product team by navigating to: Settings > Feedback > Report a problem
Your company’s Global Admins can also report the issue in the Microsoft 365 Admin Center via Service Health, as shown in the screenshot below.
We appreciate your kind patience and understanding that sometimes the initial response may not immediately resolve the issue or there may be some misunderstandings about your scenario, but we would love to hear updates from you and find out further suggestions.
Thank you for your kindness and understanding. If you need anything else, please feel free to contact me.
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