Hi muddauber, welcome to the forums. During the installation process there is an option to dual boot with your current OS. As long as you have enough space you can dual boot usually without any problems. If you do run across any issues, please let us know and we can try to help. You may also find the bodhi Linux ebook useful for reference. Most stuff you’d ever need to know should be there.
since it sounds like you already have two operating systems (windows and some other linux distribution), it would probably be a good idea to use the "something else" option in the installer to make sure you explicitly choose where you want bodhi to be installed.
if your windows takes up two partitions (like my windows 10 does), then the number of partitions may become an issue if you also have a swap partition (instead of a swapfile). the older mbr (legacy) boot system only allows for 4 primary partitions. when i added a second distro to mine with win10 and bodhi, i needed to create an extended partition. after that i was able to create separate partitions for the new distro and swap as logical partitions. a newer disk with a gpt/uefi doesn't have that same 4 partition limitation.
it might be a good idea to create the partitions you need beforehand instead of hoping the installer gets it right. i make a clonezilla image of my system before ever touching the partition table, but that part is definitely a matter of choice
You should be able to select the Linux partition and select "Install Alongside". But it's always more certain to select "Something Else" and work it from there. You could also use GPartEd and create the new partition, then run the installer.
Just to let you know, I'm an old hand at this. I have had as many as 8 distros on one computer, although I don't use Windows at all anymore.
Another tip: Bodhi or any distro using the Ubiquity installer, you can keep it from "stealing" boot priority by running the live disk (or stick), opening a Terminal, and typing "sudo ubiquity --no-bootloader". When your installation is done, you go back to the distro you have controlling GRUB, open a terminal, and type "sudo grub-update" (on some distros, it's "sudo grub2-update"), and it will add your new installation to GRUB.