He 'dedicated' [='devoted'] his life/time 'to' helping the poor. = He 'dedicated himself to' helping the poor. [=he used his time, energy, etc., to help the poor]
We have a 'dedicated' phone line for our computer. [=a phone line that we use only for our computer]
They are a group of highly 'dedicated' [='committed', 'enthusiastic'] individuals.
(..) So we focus on finding Susannah. We get her back. However it's done, I don't care. We stop this now. Everyone's working towards this. Yes. No. Not everyone. A dedicated core team. This can't go wide. Keep it so far from the press it's on the other side of Jupiter. This only exists in this room. (..)2011 TvShow: Black Mirror Title: The National Anthem Season: 1 Episode 1