Hi Ryan, we think this is one of the most exciting possibilities of SEQUEmatic and there are a couple of ways to achieve it.  Here's our recommendation, which uses a couple of sequences. We have also added a tutorial with screenshots.

Sequence 1: Update count when someone comes home

1. Start your sequence with IFTTT webhook trigger and set the event name to someone_arrives_home
2. Add the variable change step with the following settings:
   • variable name is ppl_at_home
   • change is +1
3. Create a new IFTTT applet as follows:
   • Trigger: Location service
     • You enter an area
   • Action: Webhook service
     • Make a web request
     • URL: Copy the URL displayed below the trigger step in SEQUEmatic
     • Leave the other values on their defaults

Sequence 2: Update count when someone leaves home

This is similar to the sequence above, but instead of increasing ppl_at_home we will subtract one. Follow these steps:

1. Start your sequence with IFTTT webhook trigger and set the event name to someone_leaves_home
2. Add the variable change step with the following settings:
   • variable name is ppl_at_home
   • change is -1
3. Create a new IFTTT applet as follows:
   • Trigger: Location service
     • You exit an area
   • Action: Webhook service
     • Make a web request
     • URL: Copy the URL displayed below the trigger step in SEQUEmatic
     • Leave the other values on their defaults

Sequence 3: What to do when there's no-one home:

1. Start with the variable value trigger using the following settings:
   • variable name is ppl_at_home
   • comparison is equal to
   • value is 0
2. Add whatever steps you want to perform when there is no-one home

Sequence 4: What to do when the first person arrives home:

1. Start with the variable value trigger using the following settings:
   • variable name is ppl_at_home
   • comparison is rises above
   • value is 0
2. Add whatever steps you want to perform when the first person arrives home

Let me know if you have any questions or need help setting this up.