In backend you can set categories setting like given in images

You can set categories setting in backend like this and also you can set particular date range.

In backend you can set tags setting like given in images

You can set tags setting in backend like this and also you can set particular date range.

In backend you can set all products setting like given in images

You can set all products setting in backend like this and also you can set particular date range.

In backend you can set Exclude Products setting like given in images

You can set the exclude products setting in the backend as shown in the images.

Categories or Tags and All Products Discount sale product will be shown like this in frontend

You apply discount on categories or tags or on all products those products will show sale product in frontend as given in screenshot.

In backend you can set First Order Discount setting like given in images

You can set First Order Discount setting in backend like this.

First order discount will show like this in frontend in your site

The first order discount will be shown in the frontend of your site, on the cart page and checkout page.