Multisite and theme settings

Hi everyone! I created multisite installation and everything works good but I have a question. I have 4 sites with the same template. Is it possible to change one settings (e.g. add meta widget) in the template and apply them to every site and do it once or should I click every site -> themes -> settings etc. The same question is connected with plugins. Is it possible to change plugin settings in every site and do it once or should I change plugin settings in every site?