As best I know it now, you can only have one set of Box Sign Display Settings per Salesforce object. Our client was frustrated by this limitation.
Will it ever be possible to create Box Sign Display Settings "presets"? The whole of the Box Sign Display Settings page saved as a loadable preset: prefill fields, default signers, email template, etc.
Imagined use case is: Standard SF user is working with a record of certain Salesforce object and wants to send many different Box Signs for that record/object without having access to the Box Sign Display Settings. Hit the one 'Send Box Sign' button and load the preset for "Approval", send, load the preset for "Terms and Agreement", send, all based off of one object.
We got around this with custom Flows, but if there is a way to accomplish this already and I missed it please let me know.