Make a backup of your project before following!

Go to the S_LevelSaveData and add a new variable called RespawnNames set it to Text variable type and change it to an array.

Now save the S_LevelSaveData and play in editor, this will take a while to load the player in just wait till its done.

Once the player loads in exit play in editor and click the save all button in the content browser and restart the project.

Go to the BP_SGKSaveGame and create a new function called PrepareRespawnNameData then add a new input called Name and set its type to Text.

Add another input called LevelData and set its type to S_LevelSaveData.

Add a new output called SaveData and set its type to S_LevelSaveData.

Add a new output called SaveIndex and set its type to Integer.

Now create a new local variable called LevelDataL and set its type to S_LevelSaveData.

Add the highlighted nodes shown in the image below, location at the top of the image.

Now go to the BP_MasterRespawnPoint and copy the video below.

Add the highlighted nodes shown in the image below, location at the top of the image.