E-sign system

Hi everyone, I have a CRM that uses an E-Signature on a proposal. I want to make a module that will do the same thing has the proposal workflow but to be called separately signature. The current workflow is like this: 1) We need to create a proposal. We select a client to write down our product and our price. 2) Once save the system send an email to the client saying that he received a proposal from us. 3) The client log into is a dashboard and go to the proposal. 4) He needs to click on accepted 5) Then a pop up (Modal) appears asking him to sign into a box 6) Once save we receive a notification that the client has accepted the proposal and we could see is signature on the proposal. We need to create the same thing but for a new menu call signature. To get that job you need to know Codeignitor. It's a plus if you know the CRM perfex. Ping me I'm there to show you a video of the current workflow. Thanks, Alain