1. download the latest Plesk extension from [[https://www.litespeedtech.com/products/litespeed-web-server/control-panel-plugins/download|here]]

2. edit file ''/usr/local/psa/admin/conf/panel.ini'' , create it if not exists.

3. add following content:

[ext-catalog]
extensionUpload = true

4. save the change , now navigate to **Plesk extension** ---> **my extension** , as screenshot , you will see an ** upload** button, and upload the package downloaded in step 1