How viziers work?
They are based on your settlement population. And I just remembered that I rebalanced them, and forgot to put it in the patch notes...
There are several brackets of settlement size for the Humittes. Each bracket gives one more vizier, except for the first. Going on memory they are: 20, 40, 80, 160, 320, and 640. With another level in there somewhere, I can get the exact numbers later.
Viziers are used to operate "royal" buildings, which usually require limestone and copper/bronze to build.
1 you need to have a ship
2 move it to a water hex that have a 'land' hex next to it
3 click embark on the selected unit
4 click on the ship from step 2
5 once they on the ship you can unload units on any land hexs near water (any water even shallow (shallow water makes ships to move slowly))
6 congrats now you know how to move units by ships