Admin panel

What kind of user are we talking about? Do you mean a specific person, then you can do it by going to that users profile.

If you mean for a group of users, than you can do so with either a plugin like Remove Dashboard Access or by adding code to your functions.php.

In any case here is a good overall walk through on the various ways to disable the Dashboard https://premium.wpmudev.org/blog/limit-access-to-your-wordpress-dashboard/