XF 1.4 How to edit a custom template at FrontEnd


I got a forum that everybody love and play FIFA (now FIFA 15)
I created a custom template to make a "LIVE TV" where I embed iframe which is streaming our matches from twitch.tv, youtube, etc... Here it is:
I really want to allow administrators or moderators could edit those positions at FrontEnd, no needed entering Admin CP > Templates to edit template every time "LIVE TV" change player.

I see taigachat could do the same with "MOTD" (message of the day) just by double click in FrontEnd to open input form .

If you had an idea, could you share with me, please?

Thanks for reading!
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