To create a monthly or quarterly recurring task in Outlook, please do as follows:

1. In the Tasks view, please click Home > New Task to create a new task.

2. Now a new Task window is opening, please click Task > Recurrence. See screenshot:

3. In the popping out Task Recurrence dialog box, please do as follows:

(1) Check the Monthly option in the Recurrence pattern section;
(2) In the right part, please specify the frequency as every 1 month(s) for monthly recurring task, or every 3 month(s) for quarterly recurring task, and then specify the day or weekday as you need;
(3) Please specify the range of recurrence as you need;
(4) Click the OK button.

4. Now you go back to the Task window, please add subject, start date, due date, status, etc. as you need, compose task note, and then click Task > Save & Close to save it.

Till now, a monthly or quarterly recurring task has been created in your Outlook.

Create a bi-weekly/fortnightly recurring meeting in Outlook

Create a recurring meeting on 1st and 3rd Wednesday of every month

Create a meeting recurring every other day excluding weekends