Is there a way to Create a Custom Module without having a required field?

Is there a way to Create a Custom Module without having a required field?

My company sells Restaurants / Real Estate.  An important part of our business is keeping track of any potential Buyer that we have introduced to a specific property.  

I created a custom module that works fine for this.  It has a lookup field for the contact and a lookup field for the restaurant / property shown.  Unfortunately, there is a required field (which is forced to show up on related list views), so I end up having to copy and paste the data from the lookup field into the required field, so everything looks right.  It seems like this is a waste of time.  Is there a way to get rid of the required field?

Thanks