Garden Screen:
This is to set which garden you use. It's pretty self explanatory. Use the best garden that you can.
Mode Screen:
You choose what you want the bot to do. Pick fruits is for Thieving exp (you trade the fruit juices in for EXP); Pick herbs is for money; Hybrid picks fruit one run and then a herb the next run; and Drop low-priced herbs will always pick herbs but drop lower ones like Marrentill, Guam, etc.
Add-ons Screen
This is only if you're trying to make fruits into juice. Juice exchanger will take juices from your bank and bring them to Osman for EXP. Beer glass collector will gather beer glasses from the shelf in the Apprentice's hut. Sq'irk juicer will use a Pestle and Mortar and squeeze the fruits into empty beer glasses.
Breaks and Signature Screens:
Breaks is just to set breaks. It's the same as any other bot. Signature screen allows you to track how much money and exp you have made. Type in your name, and copy+paste the URL (with your name inserted) to see your progress.