It's very simple to change forums from Galaxy S to Galaxy gallery >Click on the three dots on the top right side and then click Edit and select forums Galaxy gallery.
Please post in Galaxy Gallery section, follow click 3dots right upper corner of this page, click Edit, select Galaxy Gallery in place of Galaxy S. If you like please accept as a solution it's help to others users also, click on 3dots in my reply section and click on accept solution. Thanks.
