Hello,

We don't have a built-in way to hide the customer info from the Employee Panel's appointment details, but you can use this Custom CSS :

.amelia-app-booking #am-cabinet .am-cabinet-dashboard .am-cabinet-content .am-cabinet-list .am-cabinet .am-cabinet-collapsed-content .am-has-divider:last-of-type {
    display: none !important;
}

Here are 'before' and 'after' screenshots :

With this CSS, it will completely hide that bottom section which shows more details about the customer.

It still leaves the Customer name, though, at the top.

If you need the customer name to also be completely hidden, you can try this :

#el-collapse-head-4544 > div > div.el-col.el-col-24.el-col-lg-14 > div > div:nth-child(3) > h4 > span {
    display: none !important;
}

Custom code needs to be applied to the page where the booking form is. Depending on what you're using (Gutenberg blocks, or some page builder), adding the CSS or JS can be done in a few different ways. 

If you need help with adding custom CSS to the page, please take a look at this article.

Let me know if that helps.