Transcode rates

Is there a way to change max transcode rates for video sizes? I would like to be able to lower the rates that are transcoded considering I only have a limited upload, example would be change 720 from 10 to 3, 1080 from 21 to 6, etc. I understand the quality and this is acceptable to me.

Client apps can select playback quality in general (e.g. for remote/local scenarios) or individual items (during playback).

As server owner, you can restrict the maximum allowed bitrate for remote connections in Settings > [Server Name] > Remote Access > Limit remote stream bitrate.

https://support.plex.tv/articles/227715247-server-settings-bandwidth-and-transcoding-limits/