Adding links to your document with iSkysoft PDF Editor is quite easy, you can refer to the following step.

To add link to your PDF you can activate Edit panel and find the "Link" button. Click on the button and position mouse cursor on the place that you want to add the link. Then it will pop up a dialog box for you to set the appearance and link action.

This function allows you to edit your added link. Go to Edit>Link and click on the place that where you have added a link. Right-click it and find the option "Edit Link" and then you can start edit the link.