two artists same name - how to add any howmanyth number?

I created a new release/ artist and somehow it was merged to an already existed band/CD with the same name. How to add the nth number after their name?
Nova Cantica

1) search for all artists already in database under this name:
https://discogs.versitio.com/search?q=Nova+Cantica&type=artist

2) check if any of the appearing aritsts in database might the one(s) you are looking for:
Nova Cantica (2) ? (Swedish choir)

If none of the artists in database meets the one(s) on your release to add:
3) set up a new artist by adding the artist's name in the submission form, choosing the next free suffix no. → Nova Cantica (4). The PAN will be created automatically.
You then should add some words into the new PAN's profile, for distiguishing the artists from the others with the same name.

Hi
As i wrote the new artist already created and merged with an other artist. I need to divide them

Done Nova Cantica (3)