Only the RPG_Essentials does contain the SP8_PlayerTemplate!
1. Create a new Blueprint Class and pick as Parent SP8_PlayerTemplate (You need to add all Movements to your Character, because i have removed it, if you want to make a custome one).
2. Override SP8_Override_getPlayerName inside your new Blueprint and create a new Variable called PlayerName and add it as return to that function.

3. Set your PlayerName Variable to Replicated and on Event Possessed you can set the Variable to your Players Name.
Only if you use Chat, Guild or PlayerShop
Also call the Interface Function Sp8_AddListener on the Game State.
4. Set your Default Pawn Class inside the World Settings to your new created Player.
The Player is setup for all Plugins, but you still have to add your own Mesh, Animations and Movements!