I'm not sure I understand what you mean, would you mind sending over a screenshot or video of where you are stuck?

I know your threw an "etc" in there; but, all fingers point to my home state: Texas. We need two legislative changes at the federal level: (1) uncap the house from 435 to at least cube-root or (better) max 500k; and, (2) you can't be sworn in unless your district was from an ICRC or statistically equivalent object.

Personally I've been very surprised with the public support for the increase in political gerrymandering. I know that people think it is worth it for the short term gains, but it still seems like a bad idea to me.

By default, you work on one district at a time. Clicking adds tiles to the current district until the current district is full, then clicking will create a new district. District size is determined per round, described at the top as eg. "draw 5 districts of 4 populated tiles".

You can also click a square in the "Districts" section of the header to switch to a different district, including an empty one to create a new one.