Project Plan permissions inheritance setting isn't going to be shown in the Plan Configuration side.
Project Plan permissions inheritance setting is an additional permission for all the plans inside the Project. Even though this setting isn't shown in the Plan level, it will still take effect.
my user account has the default plan permission
Since you are the creator of the plan, your account will be configured as the Admin.
G’day Community! As we gear up to introduce Bamboo Data Center to the world, we wanted to make sure that we shared a bit more about Bamboo, the product. Our team has put together an overview video ...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events