How to change player model of Collab Viewer Template?

Problem

'i’m complete beginner with UE4. i want to change the model of player but i don’t know how to change.
to put it more precisely, now i’m using Collab Viewer Template (one of VR templates)(*1) and trying to edit the content. as a test, i’m going to change model to the one in free asset from Epic game (*2).i have done migration of the assets data of Epic game to template project. but i don’t know how to do after that…

*1: cf. Collab Viewer Template | Unreal Engine Documentation

*2: cf.Unreal Engine Hour of Code in Epic Content - UE Marketplace

I tried

'i found below video about how to change avatar but i couldn’t find data that’s mentioned in the video ( in the first place, there’s difference first person point of view and third person point of view)
i could change the model of third person template to the player model of Epic game.

Unreal Engine Tutorial: Change Character Mesh

please give me advice on this.
my english might be hard to understand, please let me know if some information is unsure
Thank you for your help

Development Environment

  • HMD:Valve INDEX ・
  • OS:Win10
  • Unreal Editor Version: 4.26.2

Similar question:
i found some but these are third person point of view case