Is it normal to grow a branch from the bottom of the trunk, and when is the dormant season?
Rubber Tree Plant
Certified GKH Gardening Expert
Winter would be your Rubber Plant's dormant period.
You can water about every 2 weeks during the winter months, then continue it's regular watering schedule in the spring.
Your plant could certainly sent up another branch.
If your growing this in an outdoor location, here is a link with care information.