Adding a Canister to an NNS identity - How?


I deployed a website to the IC following the steps here. Basically I created a canister with the default identity via the sdk and now I want to link that canister to my other, NNS, identity. I ran the following command:

dfx wallet --network ic add-controller <My principal id> 

The command worked but I can’t access the details of the canister via NNS.

Does anyone know what I’m doing wrong or has experienced the same?