How to change the default port to use another service on port 80?

Hi, I just started with UmbrelOS. I just added a container to use Nginx Proxy Manager so I don’t have to learn the ports of each service or fill up my bookmarks list, but I can’t get it to work because UmbrelOS is already using port 80. How can I change the default port of Umbrel to use NPM without a conflict between both services?
Tahnks