Write the wording once. Pull the signers off the call sheet. Send each person their own link, and file the countersigned copy automatically — with an audit trail of who saw what, when, on which device. Nothing to connect: signing is built in.

General Talent Release ships with eight wordings — General Talent, Appearance, Documentary, Commercial, Interview, Podcast, Reality TV and Social Media. Location Release is signed by whoever controls the property. Other / Custom is yours: a crew NDA, a contractor letter, anything that needs signing.
Send for signature uses the same sending box every document does. Everyone gets their own private link, opens it on a phone, reads the document in the page and signs with a finger.

Change a template and every agreement still in draft regenerates. Anyone who has already signed keeps the exact wording they agreed to — their copy, and every copy regenerated afterwards, reproduces the text they actually saw.
No. KitSlate's own signing engine is built in and needs nothing connected. The agreement, the templates and the audit trail are all in one place.
Yes — a talent release for the cast and a location release for the venue on the same job, each its own document with its own signers, status and audit trail.
The page turns into their receipt with the complete agreement as signed, and a countersigned copy is emailed to them at the same time.
Yes. Drafts regenerate from the new wording. Signed copies keep the text that was signed, and the PDF says so if an older signature's text could not be preserved.
The sandbox has a talent release ready to go. Send it to your own address and sign it on your phone.