Cspire Samsung Galaxy S3 ( rooting to get multitask screenview feature)

[Dakaylaa]

My company does not have the multitask screen option that other companies like sprint have. I want to know if i root my phone will i be able to download the jellybean version with the multitask option. If so PLEASEEEEE give me a link to a root and instructions or a walkthrough on how to do it and download multitasking. BTW: this is my VERY FIRST POST. thanks for helping