I delegated some tezos to a given baker for first time some days ago. This created a KT address. If I want to delegate more tezos to the same baker, do I simply send tezos to that KT address? Thus, if I have several delegations, to add further funds, do I just send to the respective KT address? In this sense, is the KT address a sort of contract between the baker and a given wallet?
I've seen many posts on how to delegate for the first time (e.g. here) but is unclear how to delegate further to the same baker.