hi.. i am beginner in unity and vuforia..

i am making an augmented reality book. i have 16 image target with character animation. the problem is when i scan a page, character already moving. so user cannot see the movement of the character from the start. so i want to crate a reset button. when user scan to a page, that character will reset to 1st position then they can see it from the start until the end.. 

do you have some tutorial for me to do it. 

 thank you