Setting up a rule for signatures

[MaXimus]

How do I make a rule to not allow newly registered users from creating a signature before they have reached an X amount of posts?

Thanks

[HHelp1]

<a href="https://vborg.vbsupport.ru/showthread.php?t=233979" target="_blank">Click Here To See!</a> and install it then they have option for signatures.

Regard.