MMOMinion

I am trying to use it for duty questing but don't understand exactly how to do it. Do i need to buy 4 different ff14 accounts? If yes how do i run 4 bots at the same time any guidance would be appreciated.

In order to play 4 charactersL

Ingredients:
- 4x FFXIV:ARR, FFXIV:HW or FFXIV:AiO keys (depending on what you like best)
- 4x Minion keys

Next:
01: We start by creating 4 Square Enix accounts;
02: We add 1 key to each of the 4 new Square Enix accounts;
03: Create a Character on each account;
04: Purchase 4 minion keys;
05: Set up MINIONAPP;
06: Start MINIONAPP and log in;
07: Go to Launcher;
08: Select Add New and enter the needed information;
09: Hit Save Account when all the info is entered;
10: Hit Start button and your character will load, do this for all 4 accounts.

Note:
*If your character is on: Alexander:
*Server Name: Alexander
*Datacenter: Gaia
*Failing to set these 2 will result in your char not loading.

Okay so is there any other way to do duties without spending all this money?

You can make your own duty profiles.

The ones on the store are no different than any you can make youself.
they just remove the work on your side of it.