Where to put Google Analytics Code in OJs?

I am new in OJs and would like to add Google Analytics code to track network traffic but don’t know where to put it. The code is shown as below:

Please answer me as I appreciate it very much.
Thank you.

I’ve replied to you post here:

Please don’t double-post so that we can all keep the forum clean and organized.

Hi - I have enabled the Google Analytics plugin for my journals in OJS (by selecting the checkbox besite the plugin). Do I need to enter GA’s meta-tags code in the custom meta-tags field in Settings->Distribution, for each journal?