In Premiere, Final Cut Pro, Davinci and reaper this is referred to as Normalize. The normalize function in Powerdirector 365 is interesting but is missing one of the most important things that a normalize function normally does.
In most editing software, I can adjust the common gain (normalize) in reference to 0.0 db.
For example, -1.0db, -0.5db, +0.5db, etc.
Typically this is done on a single track - for example after you have mixed down your audio to a master track.
Is there a plugin which can do this? Otherwise, It's very annoying in that I have to export the audio to another program, do the normalize there and then paste/import the results back in. It also defeats the goal of non-destructive editing.