hook meta-slider-plugin into the theme-header

hello dear wordpress-experts, good evening.

how to run Meta-Slider in the responsive-Pro-(/child-) theme?

well to begin with the beginning

i am fairly new to wordpress

run a wordpress version 4 . 0 benny with the
responsivepro theme and additionally the responsivepro – Childtheme

i also have meta-slider up and running

i want to add the slider in the header area; how to do that?!

should i try to customize and hack the header in oreder to execute php -code in my Theme

do i have to tinker and to tweak the header?

should i write a custom function and hook it in using one of the theme’s action hooks.

Or shoule i install a hook plugin and simply add the php code above to the hook field. Like this:

<?php if ( function_exists( "easingsliderlite" ) ) { easingsliderlite(); } ?>

can you assist here – that would be great.

love to hear from you

greetings