Twitter locations is a feature that allows you to add additional context to your tweets by showing your followers that you tweeted from a certain location such as SoMa, San Fransisco.
In order to use this feature in Oktopost you must first enable it in Twitter.
How to Add Locations to Tweets
Once the feature has been enabled in your account, you will be able to add a location to your tweets by simply clicking on the globe icon that appears after selecting your Twitter handle. Enter the name of the area, city or country you're tweeting from and that's it.