Timeline between dots in Dot Melody


I am new to this forum and my questions will grow out of the responses I get as I like all the apps that ONC puts out but am slow to get up to full speed on usability. Is there a general manual available for all the apps ONC produces? The embedded manuals leave a little to be desired in terms of instructions in basic operations. My first specific question is how does one time the interval between dots in Dot Melody?


Here’s a video that hopefully explains it better than I can in a post…