3.
- platform: template
  sensors:
    person1_destination:
      friendly_name: "Person 1 Destination"
      value_template: "{{ state_attr('calendar.person1_gmail_com', 'location') }}"

5.
- platform: template
  sensors:
    timetoleaveperson1:
      friendly_name: Time Person1 needs to leave
      value_template: >-
        {{
        ((as_timestamp(state_attr('calendar.person1_gmail_com','start_time'))
        - (state_attr('sensor.person1_to_calendar','duration')|int) * 60)|timestamp_custom()) | default(now)
        }}

6.
type: markdown
content: |-
  {% set timeleft =
                                  ((as_timestamp(states.sensor.timetoleaveperson1.state)
                                  - as_timestamp(now())) / 60) | int %}
  {% if (states.person.person1.state == 'home') %}
    {% if ((((as_timestamp(state_attr('calendar.person1_gmail_com', 'start_time')) - as_timestamp(now())) / 60) | int) >= -60) %}
      {% if timeleft < 120 %} {#Home and less than 2h to leave #}
        {%- if timeleft > 0 %} {#Person 1 is home and not late#}
          Person1, to make it to
          **{{states.calendar.person1_gmail_com.attributes.message}}**
          you need to leave at **{{((as_timestamp(states.sensor.timetoleaveperson1.state))|timestamp_custom("%H:%M"))}}**
          so you have **{{timeleft}}** minutes
        {%- elif timeleft <0 %} {#Home and late #}
          Person 1, you're late for **{{states.calendar.person1_gmail_com.attributes.message}}**!!
        {%- endif -%}
      {%- else -%} {#Home and more than 2 hours to the next meeting#}
      Person 1 has nothing planned soon
      {%- endif -%} {#Home and at least hour after person1 was supposed to leave -> either back from work or never went#}
    {%- endif -%}
  {%- else -%} {#Not home#}
    {% if timeleft < 15 %} {#Less than 15 minutes to when person1 is suposed to leave, probably left already#}
    Person 1 is expected back around **{{(as_timestamp(states.calendar.person1_gmail_com.attributes.end_time) + (states.sensor.person1_to_home.attributes.duration * 60 | int)) |timestamp_custom ("%H:%M")}}**
    {%- else -%} {#Not home but still plenty of time to next meeting, probably out and about#}
    {# Message for when Person 1is not home#}
  {%- endif -%}
  {%- endif -%}