Is the timelapse process local or mixed? Is there a good step by step description?

Is there some place where all the steps of the timelapse (and/or other processes) are described?/
/edit - i mean what the program is doing in each step
For example - after initiation it seems the camera builds 1 minute vids locally.
Then when the time lapse ends it shows up in the album as downloadable.
When I download is that all on my local network or does it require network access to the wyze servers?