Amibroker: How to create Custom n day interval chart

Dear Friends, I have Amibroker 5.2 version. I am quite puzzled How to view a 3 day or 5 day chart. I tried to find help in tutorial but somehow got more confused by formula language. Is there an easy way to view different days interval charts like 3 day or 5 day or 15 days. If it can be done thru formulas only: what is the right formula for that and how to implement it? I will be really grateful if somebody could help me. Thanks in advance.

Tools------------preferences---------------intraday------------choose periods

mins ,secs,hours,days

how to set 3 hours chart in amibroker for one year

Tools------------preferences---------------intraday------------choose periods

mins ,secs,hours,days

Choose 180 as custom minutes or 3 hours.If you have one year data , you can see that.