Triangles for maj7 size

I generally use triangles to indicate a Maj7 or 9th etc. The triangles are really disproportionately large and I want to reduce their size. I’ve figured out how to change them but, it seems you can only change them one by one by writing in each and every Maj chord. In Sibelius you could set the size of the triangle as a permanent setting that affected every instance of its use. Is this possible in Dorico? It’s going to take me hours to manually do every conceivable chord.
Thanks in advance for your input.

Does this solve your problem?