Step Family Mod Sims 4 Sims 4 Extended Family Tree Mod The Plum Tree Sims 4.
From there, you can select 'Enable custom content and mods' and 'Script mods Allowed' to turn on your custom content. To do this, press ESC, then go to 'Game Options', then 'Other'. Sims can only be added by being born, adopted, married, or asked to move in. Adding to the household using the Sims 4 Gallery is banned. No mods or cheats such as Buydebug (bb.showhiddenobjects) are allowed.
Mods, Cheats and Custom/Premium Content Custom Content and Premium Content are fine and are to be used at your own risk.