Promotional Memberships

It would be great to be able to offer promotional memberships that automatically roll into a standard member plan. For example, we would like to offer the first 30 days of a membership at no cost. This would be it's own promotional membership. When setting up this membership type, there would be a drop-down menu where you could select how this membership renews itself and what it renews as. The most common option would be to renew as a copy of itself but then there would be another option that allows you to select an already created membership type for the promotional membership to renew as. 

This would allow us to comfortably offer membership promotions online and avoid having staff having to zero out the initial member payment when registering someone in person.