Ok. Now I understand. Well it's possible but not like you want, because the FACEBOOK app is developed by Facebook creators so only they can add those things to app. The solution would be to wait for upcoming updates of Facebook and they should add that feature to app. If you want to speed it you can contact facebook developers and ask to add this feature. More users will ask sooner the feature would be available.
And another way you should be able to use it go to browser and then to facebook where you really will able to use it
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