Edit or install Ubuntu GRUB Sequence

My issue is more nuanced than the title suggests. I have a pc I am using as a server. I first installed a headless ubuntu because that's all I needed to run my services. I then installed a standard ubuntu alongside the headless version to help me speed up the development of my services. My problem is this: If I set the boot to the headless version, as it boots, I don't have the option to boot into the headed version. If I set the boot to the headed version, then I have the option, but the default boot is the headed version. I want to know if I can A). add a boot manager for the headless version that times out and boots to the headless version by default, or B). edit the sequence of the boot manager for the headed version.