Helle Emma,
That’s a great question and the answer is that it’s kind of up to you.
If the main website is a WordPress multisite installation, all the mini-sites are on the same WordPress network, and you want to activate The Events Calendar and Events Calendar PRO on all of the mini-sites, then you might want to consider purchasing the Multisite License. That will allow you to install the plugin once and activate it on as many of the mini-sites as you’d like.
However, if you only need The Events Calendar and Events Calendar PRO on one or two of the sites, then I would recommend purchase the license level that best matches with the number of sites you would like to activate them on:
- Personal level: 1 site per license
- Business level: 3 sites per license
- Agency level: 10 sites per license
Does this help answer your question? Please let me know. 🙂
Cheers!
Geoff