Is there someplace where I can reset the software back to how it was set up in the beginning?

I am confused about something that my Synfig software is doing. I open it up, click on canvas Edit>Properties.

Then I in put the name of my first animation and complete those two blanks. I then go down to Image and input according to what the instructor on YT says. Then I click on Time–and here is where I start to have problems. My End Time usually (99% of the time) says 120f. My Duration says 121f. I cannot input 5s, because when I do, it automatically switches over to 48f.

My question(s):

  1. What am I doing wrong?
  2. Is there a re-set button?
  3. Is there a board for beginners?

120f is 5s at one frame rate of 24frames per second.
This must help:
You can find it at File>Setup