Is there a step by step tutorial demonstrating precisely how to change character to new character we purchased through the marketplace in FPS Blueprint mode?

We are blown away with what we have been able to create with UE4. The levels for our first FPS are complete. We purchased the character pack at the Marketplace, Along with the weapons pack. We have had no problem whatsoever learning everything we needed to get to the point we are at now. Except for what should be as straightforward, That being, Swapping out the Character/s And Weapons. After on and off looking through dozens of hours of tutorials and forum posts we are still no closer than we were four months ago with understanding how to swap character/s and weapons. We have the title of the game, Artwork, Website, and very popular reviewers ready to review our game for their large audiences, As they have seen previews, And are friends in the gaming community.

All is at a standstill due to our not being able to figure this out. Any and ALL help would be greatly appreciated.

Thank You In Advance,

what you mean by swap character ? like character mesh, or default pawn. Can you just change your old character mesh to new one you download ?

Yes, Exactly. Have been looking at this for some time, And only seem to create a mess. Happy to learn, Though so far, Seem to have a blind spot to understanding this particular aspect of UE4. Thank You.