The only actions that you can perform to an installations are Edit and Delete.
Edit an installations
Go to Installations submenu from Field Services module and click on installation's Small then choose Edit. Same thing you can do by clicking on the installation then click on Edit button.editedit
Change the informations based on your needs then Save.edit
Delete an installation
Go to Installations submenu from Field Services module and click on installation's Small then choose Delete.delete
At Confirm pop-up window click on OK.delete