Hey there! You can apply for Admin here: https://www.panda-community.com/forums/admin-applications.44/, where you can see if you meet the requirements and see if the server you want to apply for is available.
Panda Community
Dominoose
Spam Goose
you need atleast 72 hours of playtime on the server you want to be admin for, and you have to show that you are enforcing rules (like telling people to who are breaking rules to stop)