A very simple program that adds a desktop entry for a short script that uses 'grub-reboot' to reboot once into Windows on your dual boot setup.
You can then setup GRUB to default into Linux and skip the GRUB menu altogether. This makes for a faster boot time, and removes the need to select a boot option from the GRUB menu.
Never run a script from a source you dont fully trust without checking it first, especially if it requires super privileges.
Go have a look. There is a total of 10 lines...
git clone https://github.com/soofstad/boot-to-windows
cd boot-to-windows
./setup.sh
The "Boot to Windows" program is now available on your system.