Shimming on Siemens

Hi all,

I’m trying to collect some data from the striatum and as you can imagine the linewidth is quite broad. Scouring the forums has suggested to try a sequential approach (whole head, followed by VOI). I was wondering if anyone would be able to provide some step by step instructions on how to do this on a Siemens VE. The most basic question being how to switch from shimming the whole brain to just the VOI (I am assuming there is a setting I have missed somewhere).

Thanks so much!

Tiffany