Attendance and engagement in available parenting interventions in both research and community settings is often inconsistent. Recent research suggests that varying the delivery modality of the intervention (i.e., in-person, telehealth, or online) has the potential to increase engagement with evidence-based parenting programs. However, while it is known that both facilitator and parent characteristics also influence engagement, no study has evaluated whether those characteristics moderate the influence that modality has on engagement. Utilizing data from the randomized controlled comparative effectiveness trial of the After Deployment, Adaptive Parenting Tools intervention, this study aimed to assess whether facilitators’ gender, military background, and competence moderated the effect of modality on parents’ engagement. Results suggested that parents were significantly more likely to have attended when they were randomized to the telehealth condition. Additionally, while there were no moderating relationships, female facilitators and facilitators who were more competent had overall higher attendance. Additionally, in the group format, facilitators with military backgrounds had higher engagement than those who did not. Understanding the effects that delivery modality and facilitators have on parental engagement is critical to continue and amplify implementation efforts in community settings.