Automatically Delete Tag

I´m exploring the idea of using Dynalist as a project manager.
In a set up where each line is a task, we can set owners with tags and due dates with… well, dates, the only thing missing are “comments”.

I thought of fixing this by using autohotkey.com so when I type, let´s, say, “nd” (for “notify david”), autohotkey replaces “nd” with the tag “#notify-david” so it´s really fast.

The only thing I´d like to do is to remove the tag “#notify-dario” (that was previously put there by David) when I write “#notify-david” (so it disappears from my own tag until he responds)

Is there a way to automate this with some kind of script?

Thanks.

I think if you hold option or alt and click a tag it disappears if that helps