Yes - you can imagine Laserfocus as an interface layer on top of Salesforce. We don't store your Salesforce data at any time, everything is kept in your own Salesforce instance.
Are you changing my Salesforce setup?
Nope. Salesforce is defined and setup by your company, we don't interact with your workflows in Salesforce or create any fields. Everything stays untouched in your Salesforce instance.
Do I need an admin to set Laserfocus up?
Nope. Laserfocus doesn't require any setup or implementation. You use the Salesforce OAuth to authenticate your user and connect with the same rights that are assigned to you from your Salesforce instance to modify your own data.