It is annoying that the Ring of the Ram item does not add an attack action to your character sheet with the +7 attack and 2d10 force damage.  I have tried building one off a crossbow, creating a spell, a feat, and nothing I have tried seems to do the trick.  I just want to see that attack in my actions list.  Is it possible?  Thank you in advance for any helpful suggestions!

You can add it directly to your character sheet as a Custom Action.

Old post but how do I make a custom action with +7 to hit and 2d10 damage?

That depends, why stat are you using, what’s the bonus, and what’s your PB?