[PS4] Social Events Not Allowing Guests

Product: The Sims 4
Platform:Sony Playstation 4
Which language are you playing the game in? English
How often does the bug occur? Every time (100%)
What is your current game version number? ?
What expansions, game packs, and stuff packs do you have installed? none
Steps: How can we find the bug ourselves? When setting up any kind of "party", 2 guests are required but I can only select 1 from the list of (currently 10) known Sims.
What happens when the bug occurs? Can only pick 1, 2 are required. It prevents continuing
What do you expect to see? To be able to continue with the game funtion.
Have you installed any customization with the game, e.g. Custom Content or Mods? On console - never used.
Did this issue appear after a specific patch or change you made to your system? Neutral/Not Sure 

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I'm trying to have a birthday party for my Sim turning from teen to young adult. You are required to have 2 guests. I can only select 1 guest from the list. There are 10 people to select.