TL;DR: yes

Just from a quick view of the repo, the simplest way to do it would be to look at the playbook.yml and copy all roles you want for a host into a new playbook, say myhost.yaml. Copy not only the roles but all the other keywords as well. Then you go to the inventory and add your hosts where you to execute the playbook against. Then you change the hosts key value in the playbook you made from all to the hosts you added to the inventory.

That is, add your hosts to the inventory, create playbooks for for them and run. That is the easiest. Read up on how to do groups and organizing your inventory to improve it from there.