Kyle if you do change the suspension it literally is very easy, you can see the adjustment on the rear shocks, it's just a matter of turning them in one direction or the other, from positions 1-5. it does come as '2' as was previously mentioned. i moved mine to 3 and was much happier with it going over bumps.
Not sure if the tool was included depending on what country you bought the bike in, but you can still get a cheap version of that pin spanner wrench for probably 5 bux.
2017 Honda Rebel 500
2018 KTM Duke 390