using walking/hiking to track

I have a question hopefully someone can answer. I'm fairly sure fitness pal tracks us be our excercise as we do it obviously but I've a walking/hking question. Since I walk on and off all day does fitness pal track all in one or can i go cumulative? example: today I walk 60 minutes 2.0 mph slow pace all at once. easy. Tomorrow I walk 2.0 mph slow pace for 90 minutes but it's not all at once: half hour here, 15 minutes there,etc... can I put this into fitness pal as one see as how if I track the tiny incriments (15 minutes, 20, etc..) by days end I have the same result? Just curious thanks!!