JQuery Tooltips in php file

I have a multiste WP with three sites with a Theme installed on it and I would like to have tooltips at my sites. The way that theme works does not allow me to directly use any of the existing tooltips plugins available on the market. The theme does not work with pages as such but each page has a short code and it is referred to a function template and therefore a bit of customization is needed to add the jQuery to the php, The modifications need to be done only in one of the three child themes and I will copy the changes to the other ones), it shouldn't be more than two hours work. Rgds