You as a user specify an x y starting point on the map with a max range it will use. 
Bot will then calculate random coordinates within the defined zone and send farmers going node to node and letting march randomly return home at times to empty the carts. Once all marches are active farming the bot will take a random break for account safety. 

When the bot has sent out all gatherers on the main acccount to farm gems, it will swap character at random times to login to the sub character and send gatherers farming mixed rss. 

Very hard question to answer as it depends on your kingdom activity/ kvk camp.
3-4000 gems every 24hours in z3
4-7000 Gems in KVK map.