Like all add-ons in the Atlassian Marketplace, Recurring Checklists Issue Checklist Template and Report is set in two ways:
from the Atlassian Marketplace;
from the Jira admin page.
Installation from the Atlassian Marketplace
Type Recurring Checklists Issue Checklist Template and Report in the "Search the Marketplace" field.
Find the Recurring Checklists Issue Checklist Template and Report add-on by SaaSJet in the search results.
Press on the "Try it free" or "Subscribe now" buttons.
Select your site on atlassian.net to install the add-on, then click "Start a free trial".
You're all set!
Installation from the Jira admin page
First, click the Apps menu and go to the Find new add-ons page.
Type Recurring Checklists Issue Checklist Template and Report by SaaSJet in the search box and then click it.
Click "Free trial" or "Subscribe now" to download and install the app.
You're all set!
...