When you start on Simplero, there might be features that you can't see in your admin menu. This is because you have customized your admin dashboard sidebar, so you see only the features you use. Everything else stays tucked away under More.
In the top navigation bar of your admin dashboard, click More.
You'll see a list of every available feature in your account. Each one has a toggle switch.

Turn a toggle On to add that feature as a permanent item in your left sidebar. Turn it Off to remove it.
When turned On, they will show on your dashboard menu for quicker access:

To hide a feature you turned on earlier, click More and turn its toggle Off. It disappears from your sidebar.