Programmable, prioritized communication methods when sending/planning checkins

[Erioldoesdesign]

Is your feature request related to a problem? Please describe.
I'm always frustrated when...I cannot plan and customize the way that certain communications are sent out in TenFour and it just blasts my people with multiple methods of responding to a check-in

Describe the solution you'd like
As a user constructing a check-in to my people, I want to be able to select multiple different communication methods and prioritize or pick which method sends first, then what method sends second after an allotted time frame. The admin user could set this globally for all authors e.g. & app message (push) then SMS, the email, Slack, then call etc. with timers on each method if a reply isn’t received then TenFour follows the flow until it receives a reply. The user could also configure multiple attempts of one messaging method e.g. In-app 1, email 1, in app 2, SMS 1, email 2, SMS 2 etc.

This could also include using feature #217 as a fall back/programmable option.