After creating the permission levels, you need to assign these to your SharePoint site groups as required. Please make sure that the SharePoint users belonging to your Enterprise are part of the site group to which you have assigned the SigningHub permission levels.

1. Browse the SharePoint site link (on which SigningHub add-in is required to install) and log into your Office 365 account with SharePoint administrator credentials.

2. Click and select the "Site settings" option.

3. Click the "Site permissions" option.

4. Select a SharePoint group (i.e. Site Owners, Site Members, Site Visitors, etc.) and click the "Edit User Permissions" option.

5. From the next appearing screen, select all four SH permission levels and click "OK".

The permission levels will be assigned to the group and shown on the SharePoint groups screen. Similarly assign these permissions to other groups also as required.