installing scripts onto simba

[sguardian]

I have not seen this question answered anywhere (although I'm sure it has been numerous times). Anyways im having troubles running scripts that are not already self installed into the bot itself. More directly, i have no idea how to do it. Each time i try to run the downloaded script it launches simba and opens a new tab on the bot itself with the specific script (I'm sorry if that makes no sense i explained it as best as i could). Anyways this is the part i get lost, I have no idea what to do from this point. If i press "run" on the bots MSI it just opens a new Simba tab and crashes the bot. Any help would be appreciated. Thx in advance

PS: I'm sorry for my shitty English, its not my first language :(

[Main]

You just press the play button, the run under msi only runs msi.

[sguardian]

Well I sure feel like a dumbass .-. Thx for help >:)