Is there a way to capture interaction effects

[shuvayan]

Hello,
For one of the projects we are doing, we suspect there might be interaction effects between the social media channels.
Can we specify something in the custom_channel_priors , as below to capture that?

# Update interaction terms if supported by DelayedSaturatedMMM
# Example of interaction effect
custom_beta_channel_prior['interaction'] = {
    'Spend_META_Spend_TikTok': {'effect': 'multiplicative', 'level': 0.2}  # Example interaction
}

Ideally we would like to discover the 0.2 from the data but if not take different values and figure out the best one from the sampling process.
I might be completely off the track here, in which case do pardon me!