It's first come, first serve, so you don't need to check with anyone. As long as no one has claimed it earlier in the thread, any building belongs to the first claimer.

Happy mapping!

That scale bar is a bit small, making it difficult to read properly. Could stand being quite a bit larger. Enlarging the compass rose a bit wouldn't hurt either. And perhaps move them to a corner on the basement map too?

Final map for the Dunor Valley. With these Quenten has mapped the entire valley in a grid of maps in the Local Area Style. 26 maps in all.

Now in the atlas. Thanks Quenten.

Skolt region map now in the atlas. Thanks for the contribution.

The collection you mentions seem fine for me, but I just gave them a quick test.

Have you perhaps expanded the collection in the symbol catalog window? If you expand the collection (+-sign), and then pick a symbol from the expanded view, CC3+ takes this as a sign that you want full manual control over the process. and stops doing random picks.

Yes.

Open the Fill Style Dialog (By clicking the FS indicator in the top right), then go to "Bitmap Files" and find the fill style you wish to modify. Near the bottom of the dialog, you should find an option for "Scaled", make sue it is checked, and input appropriate values as you need

The bottom one I think.

You'll never be able to upload that to Roll20. Image that size gets into the Gigabytes, and Roll20 only allows for files up to 10MB (5 for free account). That export size is just plain crazy.

You'll never be able to upload that entire map in battlemap scale to Roll20.
What I recommend is to upload a smaller overview map, and then do battlemap-scale maps of the areas where combat will take place, or other interesting features exist.

Note that if you really want an image that size, the only option is exporting in tiles. For that, Annual issue 129 is perfect for the job, which I used to export the City of Sanctuary. But realistically, you don't want to do that with this map, as you won't be able to use it as you are planning anyway.

For a basic export in CC3+, about 10kx10k is the upper limit. Depending on the map, it can be pushed a bit further, and some complex maps cannot even reach that, but it is a starting point for the max size.

You should find them by just clicking the :CC2SYMICOND: button and look for the "Monthly" catalogs in the list.