How to partition a pen drive with Disk Utility in El Capitan? I've a 16 GB pen drive and I want to partition it like this:

two MBR partitions: 


FAT - 1GB  
default (HFS Plus journaled) - remaining.


How to do this in El Capitan?
Open Disk Utility and select the disk in the sidebar (not a partition).
Click Partition in the toolbar.
Enter the first partition information.
Click the + button to add a second partition.
Enter the second partition information. The size will be entered automatically from the remaining space.
Click Apply.