If you would look above the reply thing you can choose some things like Italic, Bold or Underline
You will head to "Insert" > Spoiler it will show spoiler with [ ] in it.
Just put something in it and it will look like this.
Past Roleplay Exprience Los Santos Fire & Medical Department - Under Chloe Grace Moretz Los Santos Rifa - Under Justin Thane Los Santos Vagos - Under Clay Scott Jefferson Bulevard Crips - Under Nathan Kress Grove Street Families - Under Kai Ramirez
Or for the past names that you have in your signature:
Past Names Anthony Tejero Eduardo Arsenal [Current] Leonardo Tejero [Current]Coraje Del Diablos - Under Dan Devil
Press the "Insert" option over your comment tools box
After you do, you will see 4 options, choose the "Spoiler"
once you pressed "Spoiler", it will ask you whats the Title you wish to name your Spoiler
Once you choose the name, you will see this next thing:
The spoiler with the Title you named it, others will see it like this:
Now, if you wish to add things inside the Spoiler, as pictures or anything you like,
just write them between the "[SPOlLER="Lawless Roleplay"]" and the "[/SPOILER]"
if I want to add a picture for exmple, you will see it like this:
and this is how others will see it: