activating licence of ThemeForest Themes

Hi Envato Admin,
We have a web development company and started purchasing themes from ThemeForest,
please let us know how to activate the ThemeForest themes license.
Thank you.

Hi,

You can get information about themeforest theme installation and activation.

Purchase key collect from this link

OR

The final step is to add your license key to your copy of the theme. To do this:
• From your WordPress Dashboard, go to Appearance > Theme License.
• Paste the License Key in the specified area.
• Click Save Changes.

OR
Read your item documentation carefully hope there is install guidance.
you can get good guidance from your item author they can help you best cause they are expert their won items.
This is Author contacting link:

Thanks