Hi Sumant! Thanks for reaching out and sharing your need for a crop feature for cover photos.
Here are our best practices for working with media in Rise 360. Due to varying sizes even on desktops, device screens, and browsers, we recommend using images that won't lose context if cropped on the sides.
...it's a good idea to use images where important details won't be lost if the edges are cropped. Rise 360 courses are fully responsive, so your images may have different dimensions as they adapt to different devices and orientations.
You can submit a Feature Request at any time at this link