To enable Chatter Questions in your organization, add the Question action to the global publisher layout. If your organization was created after Summer ‘14, the Question action is automatically added. Nonetheless, we recommend that you drag it to the far left of the layout to increase its visibility. If you’re using a customized publisher layout in groups or on records, make sure that the Question action is added to those layouts as well.
Chatter Desktop doesn’t support Chatter Questions.
Greetings to you!
To enable Chatter Questions in your organization, add the Question action to the global publisher layout. If your organization was created after Summer ‘14, the Question action is automatically added. Nonetheless, we recommend that you drag it to the far left of the layout to increase its visibility. If you’re using a customized publisher layout in groups or on records, make sure that the Question action is added to those layouts as well.
Chatter Desktop doesn’t support Chatter Questions.
Reference: https://help.salesforce.com/articleView?id=collab_chatter_questions_overview.htm&type=5
I hope it helps you.
Kindly let me know if it helps you and close your query by marking it as solved so that it can help others in the future.
Thanks and Regards,
Khan Anas
Salesforce support needed to turn on
https://help.salesforce.com/articleView?id=collab_chatter_questions_overview.htm&type=5