By default only admin users can create signable documents. If you want someone to have access to create an eSignature document, but don't want them to have admin access, you can grant them signature admin access instead.
Click your name in the top right-hand corner, then click Settings.
On the General settings menu, click Employee data.
Scroll down to eSignature.
Under eSignature administrators, select who you want to have this access. You can scroll down the list or search for them.
Once you've selected the relevant employees, click Save.
These users can now create and send eSignature documents.