How to insert in game characters standing in idle position?

Hi, I simply want to insert a character (not the controller) so that it is standing idle and when the player clicks on it, the character will play a recording as well as show the text.
I already have the script for playing recordings when the player clicks on the object. Don´t really care about the facial expressions but desired. But still need for it to show text. The problem is that when i insert an avatar found in the unity store, or elsewhere i can´t get it to close its arms! and it just stays static. Any suggestions? My game is used as a 3d environment for education, and I am no programmer. Still would appreciate any help you could provide me. Thank you!