Follow the step-by-step guide to learn how to insert and use packs from Templately.
First, go to the Templately plugin from the WordPress dashboard to use packs. After that, it will show you the view shown on the screen below.

There you can choose any packs from the available categories. Click on your preferred one. Now, click on the ‘Build Full Website’ button. The template pack you choose will be imported instantly.

Note: You have to insert pages and blocks individually for each pack that you want to get and edit the content to make it publish.
You can check out the following docs, How To Install & Use Blocks from Templately, for details.
If you need any help, feel free to contact us for support.