This might be a bigger work around than you would want but you could potentially use a table to track when you want this rule to run. I haven’t tested this out though.
For this trick, you would need to run your rule every Monday. And the key is your data queries will filter for data if the Run Date = Today. So each Monday it will run, but it will only find data that matches every 2 weeks.
First step, I would create a table to host your run dates. Use Excel to create a list of all the dates. You can use a formula in excel to calculate Start Date + 14 day. So in the end you would have,
- 10/05/2020
- 10/19/2020
- 11/02/2020
- Etc
In your rule, I would add a filter somewhere in your queries to search for the date. If today = run date, then you query provides your expected results. If Today does not equal Run Date, the query would provide zero results, thus your rule would run nothing on the Monday’s where this date does not match.
On your schedule, you would set the rule to run every Monday. When you look at your rule results, you should end up with a run that works on the correct Monday, and then one that fires nothing on the following Monday.