check in your owner manual
what i remember is this, you are on an incline, with the brake pressed. all doors closed, in drive gear.
when you release the brake, car wont roll back for a few seconds.
however i would still advise you to use handbrake. this hill hold is a rather jugaar thing, which places strain on the clutch wearing it out.
there is also a creep function. your car will move forward slowly in drive without accelerator input. but if your doors are open this function wont work
ags is still a manual car. use it exactly like a manual, and it will work perfectly.