When transition takes place in leadership at a church that can be disequilibrium. However, a selfless, Christ-centered, patient minister can keep the chaos from engulfing or defining the church.
Your denomination might have some training and opportunities to be involved in this type of ministry effort.
Beyond your denomination’s training and opportunities, here are a couple websites worth your consideration:
Article: Types of Interim Pastors
Article: 9 Characteristics of an Effective Interim Pastor