How should i set up the system?

Beginner Questions
1

i am a day trader, most of the time looking at 30 mins, 15mins and 5 mins chart.
i want to set up some tech indictors.
For the
MACD should I use 12 26 9
Stochastic 15 5 5 <-- i seem some people use 5 5 5 for a longer time chart (1 hour). Some use 13 3 3. It makes me really confuse
RSI 14
I don’t know which set up is more suitable for me for day trader.

thanks for the help ~

2

test different settings and see which one u like.

seriously, test it urself.

3

I personally use 8,5,3 by the way.

u can test that as well.

4

thanks.
I had read some notes at school, i dont understand how the number effect the chart.
Sorry . can you explain it to me please?:o