PlantUML Web Server

@startuml
skinparam defaultTextAlignment center
skinparam ConditionEndStyle hline
'!pragma useVerticalIf on
rectangle "= OUTAGE NOTIFICATION ACTION PLAN"
start 
    :====
    !! INCOMING OUTAGE NOTIFICATION !!
    (Slack workflow triggered)
    ====;
    :All available Team A immediately\nanswer "availability" Slack workflow;
    if (Responses received within 15 minutes?) then (NO)
           label spacer
           label lab
           #red:shouldn't need this box\nfor detach to work;
           detach
    else (YES)
         if (//Entire Team A// already attending Live Outages?) then (YES)
           ' the following "goto" should be a "comefrom" and not terminate the flow
           goto lab
           label spacer2
           :Team B picks up;
        else  (NO) 
            label spacer3
            label spacer4
            :Team A picks up;     
        endif

endif
    :Available team members swarms on Outage/Incident;
    :Team members step away as parallelisation no longer useful;
stop
@enduml

Pure Javascript

PNG SVG ASCII Art