rhel7 with Windows 7

I have a desktop with Windows 7 and I installed RHEL7 Desktop (Client) on that machine and I wanted the dual boot option. When I installed RHEL7, it got installed on that desktop but it hasn't given me the option of booting into Windows 7. After login I checked and both my Windows partitions are intact as I have selected un-partitioned space for installation. Hence is there a way I can reinstall RHEL7 and while installing I can inform it to consider Windows for boot option? Any help is sincerely appreciated.