"Not available unless: You belong to <Some group>" : How to hide this message in moodle course

I&#39;m building a Moodle course for my students who are part of different batches. Each batch refers same lesson notes, but the Quiz and Assignment activities vary for each batch. The students are categorized into groups for the course and access to the activities is restricted. But the course page displays following message for restricted activities. : &quot;Not available unless: You belong to &lt;group&gt;&quot; Is there any way to hide the activity as well as a message for restricted users. [![enter image description here][1]][1] [1]: https://i.sstatic.net/96bSa.png