How to change save button in custom doctype?

I created a custom doctype1.
when I create a new document in doctype1, I have a “save” button. After clicking this button, it remains with the name “save”.
How can I change its functionality (as in other doctypes) so that after saving the document the “Draft” button is displayed, then “submit”, then “cancel”?

Customize your doctype and tick the check box “Is submittable”

Now after clicking on the “save” button, the “draft” status appeared on the left of the document name.
And how to change the “save” button to submit and so that later the status changes to “complete”?

After clicking “Save” it automatically switches to “Submit”

thanks for the answer.
I figured it out, I had to go into the permission manager and configure user permissions