Ask about the grub by having 2 ubuntus installed (18.04 LTS) and windows

I want to install ubuntu 18.04 LTS 2 times and windows, I have a ssd of ~240 gb and an hdd of ~ 900 gb and I wanted to install a ubuntu in the ssd and another one in the hdd alongside windows. I have a question before installing them which is that in the group at the time of having 2 ubuntus and Windows installed I can do something that leaves me as first the last one I have used?. Thx