Really only just discovered r/ bwf and your app. Looks fantastic! Thanks for your work!
As per the Recommended Routine FAQ
https://www.reddit.com/r/bodyweightfitness/wiki/kb/recommended_routine#wiki_do_i_rest_90sec_between_every_exercise.3F.2Fsomething_confused_something_how_into_pairs
Exercises should be paired if you meet the requirements.