For the relationships sheet, (which obviously cannot yet be completed, but there's no harm putting a template down) structure it like this.

[code][hider=Relationships][center]?[b]Character Name[/b]?
Description

?[b]Character Name[/b]?
Description
[/center][/hider][/code]

[b]Replace ? with one of these symbols:[/b]
⚜ Respects /// ☯ Neutral /// ☮ Friends /// ♫ Close Friends /// § Tense /// ♥ Interested /// ⚤ Significant Other /// ☠ Enemies /// ♦ Unsure

Example:
[hider=Relationships][center]☮[color=lime] [b]Character 1[/b] [/color]☮
Description of relationship, bla bla blah.

§[color=lavender] [b]Character 2[/b] [/color]§
Description of relationship, bla bla blah.

☠[color=orange] [b]Character 3[/b] [/color]☠
Description of relationship, bla bla blah.[/center][/hider]

Adding the character colours in isn't a must, but makes it look nicer.

Try and order them the same way the Character tab orders them.