Thank you for your question. I look forward to working with you to provide you the information you are seeking for educational purposes.
We cannot provide you a form that is specifically on point because the courts do not have them available online. However, we can provide you a sample for format only and you would have to insert the below statute as your right to intervene in the case if you are a grandparent seeking to intervene in a proceeding in the court. See: http://www.clayton.k12.mo.us/cms/lib/MO01000419/Centricity/Shared/pdf/Turner/SLPS_MotiontoIntervene.pdf
This template is for FORM only and you have to modify it to state the county and juvenile court you are filing in. Then if you are intervening as a grandparent you insert the statute below:
A grandparent shall have a right to intervene in any proceeding initiated pursuant to Chapter 211 RSMo., in which the custody of a grandchild is in issue, unless the juvenile judge decides, after considering a motion to intervene by the grandparent, that such intervention is against the best interest of the child
. Section 211.177.1, RSMo. The right of the grandparent to intervene terminates upon the adoption of the child, except where the child is adopted by a step-parent, another grandparent or other blood relative. Section 211.177.2, RSMo.
If you are intervening for some other reason let us know and we can assist with that information.
However, you should go to legal aid if possible to get actual representation if the juvenile court has not assigned an attorney to you.