Just signed up for Adobe Pro DC and have a question

Sounds like you also need to sign up for AdobeSign

Rightsignature may be a cheaper option

Yes. Adobe Acrobat Pro DC comes with Adobe Sign. You have to upload the PDF into your Adobe Acrobat Pro (online) dashboard and then create a template from it.

However, you can only have one person who operating the account. If you are a one-man business, then you should be fine. If you are trying to get multiple people to use, you have to pay for more accounts, which I think is cost prohibitive. You might think you could share one account, and you can, but two people can't be signed in at the same time. It's a huge pain to sign in/out of Adobe, so I wouldn't do that.

I will top all this off by saying that Adobe's online FAQ/support is horrible, and their chat/phone support is worse. None of what I said above is intuitive, and you'll only figure it out by trial and error. Adobe Sign is a horrible platform. For the money, you should consider SignNow. It's not perfect. It has it's pros/cons, but it's the best I've found from a cost/benefit perspective, and I've tried all the major ones.

I don’t need the security/authentication features that some e-sign platforms provide. That's why SignNow works for me. If you need those, I recommend DocuSign. It's more expensive, but it's the next best option.