I use this site
https://steembottracker.com/delegation.html#update
Built by @yabapmatt which uses steemconnect
you just put your name in the first box
That will show you a list if you have any delegations and allow you to add more
To delegate to nfc just put nfc in the delegatee box and how much steem power to delegate then click delegate (not delegate max)
This will bring up steemconnect ... just check its the right amount and the right name and then complete through steemconnect