This is a one time activity only when VPN configuration is added manually on the Pulse iOS client (NetworkExtension based ).For more details on NE Client, please refer
KB43801 FAQ on NetworkExtension API Framework being used in Pulse iOS Client 7.0.0Post successful authorization,the VPN configuration will be added and the same will be visible on the Home screen of Pulse Client.
Screenshot 1 : Typing the connection url manually on the Pulse iOS Client 7.0.0 and clicking on Submit
Screenshot 2 : Configuring the additional parameters and clicking on save opton
Screenshot 3 : The below message shown in the screenshot will be shown for the users.
"Pulse Secure " Would like to Add VPN Configurations. Clicking the "Allow" option is required. ( Note : This is a one time activity only )
Screenshot 4 : The user will be prompted to enter their iPhone/ipad passcode for allowing the system changes.

Post successful authorization, the VPN configuration be added and the same will be visible on the Home screen of Pulse iOS client.