Instead I designed this as a template that could be laminated and reused all year.
If you could use an editable sign up sheet for Morning Meeting, or any other purpose, really, you can download my Morning Meeting Shares Sign Up Sheet from Google Drive. It's in Word format, so all you need to do is add your students' names to the boxes and put it near your meeting area. You can also type the "share task," such as "put a check in the box" or you could get creative and change it each week to "write a multiple of 4" or "write an adjective." Or if you want the whole package, I've created a list of about 30 ELA and 30 math tasks that are aligned to the 4th grade common core standards are included (as well as 8 third grade standards to ease into the year as you set up this sign up routine). For example, the week after you've taught multiples you might ask students to "write a multiple of 4" if they want to share, or in ELA they might be ready to "write an adjective" as a way of signing up. This Mornimg Meeting Shares Tasks is available for purchse in my TPT store if you'd like more than the free template.