Setting up Password Hash with Seamless Sign On to access Azure hosted apps

Hello,

We have an Environment, where ADFS 3.0 and SSO is setup for a domain. This is used to access Office 365 as well as Azure hosted apps & Legacy Apps.

Password Hash/Sync is already in place. Requirement is to use Seamless Sign On to access Azure Based Apps. Is it possible? How? 

If someone can outline the steps, it would be highly appreciated.

Note: All workstations are joined to Azure AD already. We want to keep ADFS alive to access legacy Apps. However, we are ready to change Domain Authentication type to Managed from Feder