Contains:
- network creation
- admin rights
- approving peers
- leaving network as admin
- preserving admin rights in case of PC change or Windows reinstallation
Network creation:
1) Go to Network -> Create new network
2) Set up network name and password, then share it with your friends
If you check the box "Allow sending connect requests without password" then more people can connect to your network just using the Network name and you will need to approve them to join the network fully.
Admin rights
So now you have a network and you automatically become the one and only admin.
That means that you can:
- delete the network,
- approve peers who connect without a password,
- remove peers from the network

Approving peers
If user is connecting to your network without password (if your network is named after a popular game or applicant misspelled the password) it'll appear in the network with this indicator . If you want to approve this applicant you need to right click on the user name and choose "Approve joining" or choose "Remove node from network" if you don't want for user to join.

Leaving the network as admin.
To leave the network you need to delegate admin rights - right click on the user in the Network -> Grant admin rights.
If you will decide to join the network again admin rights will not come back to you.
How to preserve admin rights if you've switched PC or reinstalled Windows.
If you found this article helpful vote up!
You can also find interesting:
How I can change my name in Radmin VPN and other common question answered
Ports and making a direct connection
Unfortunately, there is no way to delete network in this case.